DIY Solar Power House

My pool heater is a lemon, what should I do?

Situation:
-15′ round above ground pool in Lisle, IL (30 miles west of Chicago)

-Like to keep the pool open June – August and maintain at least 85F water temp

-7 year old Natural Gas pool heater has broken down again

-Spent nearly twice the price of the unit in repairs over the years

-Nicor insurance will pay $300 towards repairing the old system or buying a new system.

-Repair will cost $650 (assuming the repair works the first time)

-My budget is $400 out-of-pocket or $700 total.

-Calculator at solardirect.com says I would need 166 square feet of solar panels (about 8′ x 20′) to solar heat my pool, which I can’t accommodate without it being an eyesore.

Should I get the lemon unit repaired or is there another fairly dependable unit that will suit my needs for under $700?

I’m in the middle of a similar project for a neighbor. A decent new pool heater will cost you about $1800 not including installation. However, if you live in an area with a lot of swimming pools, you might be able to find a used heater on craigslist. In Southern California, a lot of people are filling in their pools to save money on water and electricity, so a free heater will pop up online every couple of days. Just check the rating plate on your existing heater and look for the thermal input. It should be measured in kiloBTUs or kBTUs. It can range from 55 kBTUS (55,000 BTUs) up to 400kBTUs (400,000 BTUs.) With that number in mind, look around and see if anyone has a natural gas pool heater with a similar rating. If you can’t find something for free, you ought to be able to find something for $700 or less. Good luck!

Pocket Digital Scale Solar Calculator

Horizon PCC-100 Digital 100g by 0.01g Pocket Scale and Calculator $13.99 With a solar powered calculator on the cover and extensive weighing modes (gram, ounce, carat, grain, troy ounce, and pennyweight), this versatile pocket scale is suitable for a wide variety of precision weighing needs (jewelry, reloads, coins, gold, medication, etc.)….

BUXTON GENUINE BUXHYDE COUPON/RECEIPT ORGANIZER WITH 8 POCKETS AND SOLAR CALCULATOR – BLACK $12.99 Our Buxton Genuine “Buxhyde” Coupon/Receipt Organizer features zippered construction for security and style, 8 gusseted pockets with included blank label cards for easy organization, exterior clip which is great for shopping carts, built-in solar calculator, colorful polka dot lining for fashionable, fun flare. The 8 gusseted pockets have plenty of room to organize your receipts, coupons, notes, …

BUXTON GENUINE BUXHYDE COUPON/RECEIPT ORGANIZER WITH 8 POCKETS AND SOLAR CALCULATOR – BROWN $12.99 Our Buxton Genuine “Buxhyde” Coupon/Receipt Organizer features zippered construction for security and style, 8 gusseted pockets with included blank label cards for easy organization, exterior clip which is great for shopping carts, built-in solar calculator, colorful polka dot lining for fashionable, fun flare. The 8 gusseted pockets have plenty of room to organize your receipts, coupons, notes, …

Calculated Industries 4019 Materials Estimating Calculator $21.99 Hard cover door with calculation reference (view larger). Save time and money by reducing estimating errors with the Materials Estimating Calculator (model 4019) from Calculated Industries. You’ll be able to quickly and easily calculate material costs and allowances and get exactly the materials you need. It’s designed for contractors, trades people and estimators who need to estimate mate…

Sharp Electronics Products – Dual Power Pocket, 10-Digit, 2-3/4×4-1/8×1/5, Gray – Sold as 1 EA – 10-digit pocket calculator features a liquid crystal display (LCD), three-key memory, percent, tax keys, auto shutoff, and metal case. Three-key memory includes memory plus, memory minus and recall/clear memory keys. Twin-powered solar operation automatically switches from solar cells to battery (LR1130) power in low light. Calculator is lead-free and mercury-free. $7.99 Sharp Electronics Products – Dual Power Pocket, 10-Digit, 2-3/4″x4-1/8″x1/5″, Gray – Sold as 1 EA10-digit pocket calculator features a liquid crystal display (LCD), three-key memory, percent, tax keys, auto shutoff, and metal case. Three-key memory includes memory plus, memory minus and recall/clear memory keys. Twin-powered solar operation automatically switches from solar cells to battery (LR…

Canon Ts-1200Tg 12 Digit – Green Portable Desktop (Office Machine / Calculators) $11.84 CANON TS-1200TG 12 DIGIT – GREEN PORTABLE DESKTOP. CANON TS-1200TG 12 DIGIT – GREEN PORTABLE DESKTOP – ~12 digit angled display – ~Dual powered (CR2032) – ~3 key independent memory – ~Made of 100% recycled plastic – ~Percent, square root keys – ~Rate set/recall, tax +/- keys – ~Decimal select, rounding -…

17 Adjustable Keyboard Tray With All-In-One Gel Wrist Rest 70% Recycled Material $115.23 Mouse surface can mount left or right.Designed for standard workstations that can accept a 17-3/4″ track.Made from 70% recycled material.Black….

Pos Receipt Printer Pc Compatible $277.87 4KB memory.180,000 hour MTBF.Auto cutter.Paper dimensions: 57.5 0.5mm, 69.5 0.5mm, 76 0.5mm (W) x diameter 83.0.Wall mounting option.PC compatible.Green compliant; RoHS and WEEE.Dark Gray.6 5/16″ W x 5 1/2″ H x 9 3/4″ D….

Casio Scientific Calculator (FX260SLRSC) $6.12 FEATURES FRACTION CALCULATIONS TRIGONOMETRIC FUNCTIONS & MORE 1 & 2 VARIABLE STATISTICSMEAN/SUM/# ELEMENTSSTANDARD DEVIATIONSCIENTIFIC NOTATIONPOLAR/RECTANGULAR CONVERSATIONSOLAR POWEREDINCLUDES HARD SLIDE-ON CASEShipping Dimensions : 9.50in X 6.00in X 1.00inEstimated Shipping Weight : 0.3434…

Garmin nüvi 265W/265WT 4.3-Inch Widescreen Bluetooth Portable GPS Navigator with Traffic $139.99 …

Casio HS8VA Pocket Calculator $10.48 Do calculations on the fly with this Casio pocket calculator. This pocket calculator has several functions including percentages and square roots.Functions: Mark up, square root, percentageDisplay Screen: Eight (8) characterPower Source: The power source is dual power source, both battery and solar sun powerDimensions: 8.5 inches high x 4.3 inches wide x 0.6 inches deepModel: 17-006-0008

Financial Calculator $342.86 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: TI15TK Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Name: Financial Calculator Product Type: Business/Financial Calculator Technical Information: Functions: Conversions between improper fractions and mixednumbers Conversions between fractions, decimals and percents Battery Information: Power Source: Solar

Premium 4-in-1 Solar Calculator (Case of 25) $195.21 These Premium 4-in-1 solar calculators are perfect for use in a home, office or school setting. These environmentally friendly calculators feature an 8-digit LCD display.Manufacturer: PremiumRetail packaged: Color gift boxUPC codedMaterials: PlasticDimensions: 2.625 inches wide x 4.125 inches high x 0.625 inches deepEnvironmentally friendly solar operated8-digit LCD displayButton cell battery for backupMirrorBall point penNote padCase of 25 calculators

Statistical Analysis of Clinical Data on a Pocket Calculator (Hardcover) $127.57 The first part of this title contained all statistical tests relevant to starting clinical investigations, and included tests for continuous and binary data, power, sample size, multiple testing, variability, confounding, interaction, and reliability. The current part 2 of this title reviews methods for handling missing data, manipulated data, multiple confounders, predictions beyond observation, uncertainty of diagnostic tests, and the problems of outliers. Also robust tests, non-linear modeling , goodness of fit testing, Bhatacharya models, item response modeling, superiority testing, variability testing, binary partitioning for CART (classification and regression tree) methods, meta-analysis, and simple tests for incident analysis and unexpected observations at the workplace and reviewed. Each test method is reported together with (1) a data example from practice, (2) all steps to be taken using a scientific pocket calculator, and (3) the main results and their interpretation. Although several of the described methods can also be carried out with the help of statistical software, the latter procedure will be considerably slower. Both part 1 and 2 of this title consist of a minimum of text and this will enhance the process of mastering the methods. Yet the authors recommend that for a better understanding of the test procedures the books be used together with the same authors` textbook "Statistics Applied to Clinical Studies" 5th edition edited 2012, by Springer Dordrecht Netherlands. More complex data files like data files with multiple treatment modalities or multiple predictor variables can not be analyzed with a pocket calculator. We recommend that the small books "SPSS for starters", Part 1 and 2 (Springer, Dordrecht, 2010, and 2012) from the same authors be used as a complementary help for the readers` benefit.

BA-20 Simple Calculator $74.79 Simply the most convenient, accurate way to perform cost-sell-margin calculations. Manufacturer: Texas Instruments, Inc Manufacturer Part Number: BA-20 Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Model: BA-20 Product Name: BA-20 Simple Calculator Product Type: Simple Calculator Technical Information: Functions: Solve cost-sell-margin problems Enter any two variables and the third appears instantly Automatic constant quickly performs repetitive calculations Percent key speeds computation of add-ons and discounts Add-to, subtract-from and recall memory Square root Change (+/-) Battery Information: Power Source: Solar

Casio FX-115MSPLUS Scientific Calculator $54.01 Featuring a 279 Built-In Functions, 2-Line Big Display and Solar Plus, the FX-115MSPlus is permitted on College Entrance Examination Boards like the SAT and PSAT/NMSQT. Key operations are performed following the mathematical expressions exactly as they are written in the students textbook. Function, arithmetic operation symbols and the equals symbol appear on the display to show the current status of a calculation at a glance. Manufacturer: Casio Computer Co., Ltd Manufacturer Part Number: FX115MSPLUS Manufacturer Website Address: www.casio.com Brand Name: Casio Product Model: FX-115MSPLUS Product Name: FX-115MSPLUS Scientific Calculator Product Type: Scientific Calculator Technical Information: Functions: Mathematics: Fixed Decimal Scientific Notation: 10 + 2 Parenthesis Levels: 18 Log, 10x , 1n, ex x2, xy, 1/x, x!, % Fractions Complex numbers Trigonometry: Sin, cos, tan, & inverses Hyperbolic functions Degrees/radians/grade (DRG) DRG conversions Computer Math: Dex, hex, oct, binary Science: DMS <> DD, P <> R Statistics: One/two-variable Mean, standard deviation Permutations & combos Battery Information: Power Source: Solar

Sharp EL-738C Business/ Financial Calculator $75.83 This 10-digit financial calculator computes all time-value-of-money calculations. Large 10-digit, liquid crystal display (LCD) features two lines and mode indicators. Functions include amortization calculations and interest rate conversions, nonuniform cash flow calculations, two-variable statistics with linear regression, cost/sell/margin and markup calculations, sign change, percent and square root. Calculator weighs 3.5 oz. and includes batteries and a wallet cover with pocket. Manufacturer: Sharp Electronics Manufacturer Part Number: EL-738C Manufacturer Website Address: www.sharpusa.com Brand Name: Sharp Product Model: EL-738C Product Name: EL-738C Financial Calculator Product Type: Business/Financial Calculator Technical Information: Functions: All time-value-of-money calculations, amortization, non-uniform cash flow, and interest rate conversions 2 Variable Statistics with linear regression Cost-Sell-Margin and mark-up calculations 2 line display – 1 line equation and 1 line numeric Sign Change Percent Square Root Battery Information: Power Source: Battery Package Contents: Business/Financial Calculator Protective wallet Solutions manual Batteries

HP F2238AA Officecalc 300 Multifunction Tax Calculator $43.62 Beautify your desk or sales counter with the smart and elegant HP OfficeCalc 300. Adjust the tilt of the large 14-digit screen to view your work easily and comfortably.Manufacturer: HP Model number: F2238AAProduct type: CalculatorDisplay screen: 14 Character – LCDPower source: SolarPower source: BatteryStandard 4-Rule CalculationAutomatic Replay/Two-key Rollover105 Steps Check amp; CorrectTax CalculationGrand Total FunctionMemory CalculationConstant FunctionPercentage CalculationSquare Root Calculation)Double Zero KeyDecimal Point Selector(F 4 2 0 AAutomatic Power offDimensions: 2.1 inches wide x 0.3 inches deep x 4.5 inches highWeight: 1.0 poundsPackage Contents: Calculator

Desktop Calculator 8-digit Dual Power $20.35 Brand: A&W Office SuppliesFeatures solar power with battery back-upPower On/Off switch8-digit operationFull-function memory Easy to read display Materials: PlasticColor: BlackDimensions: 5.25 inches high x 4.25 inches wide

Casio fx-300ESPlus Scientific Calculator $41.48 2-LINE SCIENTIFIC CALCULATOR ACCSCALCULATOR

Solar Rechargeable Pull Power Flashlight $22.85 Don't worry about being stranded without a light ever again with this Super Bright Solar and Hand Pull Rechargeable LED Flashlight. Imagine a flashlight small enough to fit in your pocket, but with three powerful LED lights, and it never needs batteries.Small solar panel on the back of the flashlight converts light to energy to power the bright LED lightsOr use the pull string when solar power is unavailableIlluminate 30 minutes when the string is pulled for one minuteCharge in the sun for 8 hours for 3.5 to 4 hours of useOn/off switch Three bright LED lights Easily fits in pocket or purse Dimensions: 2.75 inches long x 2.75 inches wide x 1.125 inches thick

Stokes Publishing TI-15 Overhead Calculator $173.57 TI-15 Overhead Calculator

Solar System Map 1990 $14.95 This fascinating map of the solar system is teeming with information about the sun, the planets, their satellites, the formation of the solar system and makeup of the celestial bodies. Published in August 1990 with two articles, Neptune Voyagers Last Picture Show and Voyage of the Century, this map accompanied another work entitled Portraits of our Celestial Family. The 1990 Solar System map feaures Profiles and illustrations of the sun and each planet in the solar system The satellites of each planet Illustrations of the inner solar system and outer solar system An abundance of information about the formation of the solar system and the makeup of the planets and their satellites Information on mapping the solar system Information on comets and asteroidsCoverage Area Space

TI-89 Graphing Calculator $353.26 Essential for 16-18, university and beyond, the TI-89 is the most logical graphing calculator for advanced mathematics studies. Enhanced with Flash technology, this graphing calculator gives you the flexibility to add calculator software applications and additional functionality, providing long-term value. The TI-89 is allowed for use on the AP Calculus, AP Statistics, AP Physics, AP Chemistry, PSAT/NMSQT, SAT I, SAT II Math IC & IIC. Manufacturer: Texas Instruments, Inc Manufacturer Part Number: TI-89 Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Model: TI-89 Product Name: TI-89 Graphing Calculator Product Type: Graphing Calculator

Graphics Calculator $2595.54 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: 84PL/TPK/1L1/B Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Model: 84PL/TPK/1L1/B Product Name: TI 84+ Graphing Calculators Teacher Pack Product Type: Graphing Calculator Technical Information: Functions: Graphs 10 rectangular functions, 6 parametric expressions, 6 polar expressions, and 3 recursively-defined sequences Sequence graphing mode shows time series plot, cobweb/stair-step plot, and phase plots Interactive analysis of function values, roots, maximums, minimums, integrals, and derivatives Matrix operations including inverse, determinant, transpose, augment, reduced row echelon form, and elementary row operations. Convert matrices to lists and vice-versa List-based one- and two-variable statistical analysis, including logistic, sinusoidal, median-median, linear, logarithmic, exponential, power, quadratic polynomial, cubic polynomial, and quartic polynomial regression models 3 statistical plot definitions for scatter plots, xy-line plots, histograms, regular and modified box-and-whisker plots, and normal probability plots Advanced statistics features including 9 hypothesis testing functions, 6 confidence interval functions, and one-way analysis of variance 15 probability distribution functions including Normal, Student-t, Chi-square, Binomial, and Poisson Business functions including Time-Value-of-Money (TVM), cash flows, and amortization. Full screen interactive editor for solving TVM problems Battery Information: Power Source: Battery

Our Solar System (DVD) $91.3 OUR SOLAR SYSTEM

HP 35S Scientific Calculator $118.43 Get the flexibility no other scientific calculator can offer! Our 35s Scientific Calculator lets you choose RPN or algebraic entry-system logic (no other scientific calculator offers both). It also features a large, two-line alphanumeric display and adjustable contrast, plus a robust library of built-in functions and constants. Manufacturer: Hewlett-Packard Manufacturer Part Number: F2215AA#ABA Manufacturer Website Address: www.hp.com Brand Name: HP Product Model: 35s Product Name: 35S Scientific Calculator Product Type: Scientific Calculator Technical Information: Functions: Base-n Functions for Binary, Octal, Decimal and Hexadecimal Number Calculation and Conversion Linear Regression Logarithms Exponentials Inverse Functions Fraction to Decimal Conversion Battery Information: Power Source: Battery Package Contents: 35S Scientific Calculator Batteries Manual Case

Solar System Map 1981 $29.95 Published in July 1981 with a map of Saturn and the article Voyager 1 at Saturn Riddles of the Rings, this stunning illustration of the solar system contains information about the sun and the planets, as well as an extensive introduction about the formation of the solar system.The 1981 Solar System map features Illustrations of the sun and planets with their satellites An article on the creation of the solar system by Bradford A. Smith, Department of Planetary Science, University of Arizona, Tucson Information on each planet including distance from the sun, revolution around the sun, rotation, diameter, density, and temperatureCoverage Area Space

Casio Overhead Calculator $51.93 Manufacturer: Casio Computer Co., Ltd Manufacturer Part Number: OH450 Manufacturer Website Address: www.casio.com Brand Name: Casio Product Name: Overhead Calculator Product Type: Simple Calculator Technical Information: Functions: Change sign Square root Percent

Ti-89 Graphing Calculator For Dummies $26.75 Shows science, math, and engineering students and professionals how to make the most of this top-of-the-line graphing calculator Describes step by step how to harness the calculator`s 3D graphing capabilities, advanced built-in functions, USB connectivity, and 16 preloaded applications, including calculus and electrical engineering tools The book`s accessible, plain-English explanations are a must for users who find TI`s instruction manual difficult to slog through Since students can now use the TI-89 and other graphing calculators on AP exams, the SAT, and other standardized tests, this book will get them up to speed quickly Texas Instruments owns over 95 percent of the graphing calculator market

Casio Desktop Printing Calculator $97.65 Color Printing Calculator features a large, 12-digit, digitron display and built-in tax and exchange function. Two-color ribbon printer produces 3.5 lines per second on 2-1/4 plain paper. Calculator offers right shift key, automatic constants, decimal selector (6,4,3,2,1,0A), item counter, subtotal, total, grand total, independent memory, percent key, independent add register, round off, round up, cut off, ADD Mode, cost/sell/margin and item counter. Backspace key allows easy corrections. AC operation. Weighs 3.7 lb. Manufacturer: Casio Computer Co., Ltd Manufacturer Part Number: FR2650TM Manufacturer Website Address: www.casio.com Brand Name: Casio Product Name: Desktop Printing Calculator Product Type: Printing Calculator Technical Information: Functions: Cost/Sell/Margin Calculations Tax Calculations Sub-total Total and Grand Total Calculations Comprehensive Decimal System Independent Memory ( 4 Memory Keys) Battery Information: Power Source: AC Supply

73 Explorer Graphing Calculator $1585.58 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: TI-73 Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Line: Explorer Product Name: 73 Explorer Graphing Calculator Product Type: Graphing Calculator Technical Information: Functions: Fractions Data analysis Plotting English and metric conversions 7 statistical plots: pictographs, pie charts, bar charts Display & Graphics: Display Screen: – LCD

HP Financial Calculator $222.34 Manufacturer: Hewlett-Packard Manufacturer Part Number: F2234A Manufacturer Website Address: www.hp.com Brand Name: HP Product Name: Financial Calculator Product Type: Business/Financial Calculator Technical Information: Functions: Time-Value-of-Money Amortization Interest Rate Conversion Cash Flow Battery Information: Power Source: Battery

Solar Salt Crystals – 50 Lb Solar Salt Crystals: GR $12.95 Solar salt crystals can be used to help melt ice in the winter or used for your water softener. Each bag has fifty pounds of solar salt.

Texas Instruments BAIIPLUS Calculator $95.57 Easy-to-use Financial Calculator solves time-value-of-money calculations such as annuities, mortgages, leases, savings, and more. Generate amortization schedules. Compute NPV, IIR, break-even calculations, interest conversions, delta percent, profit and loss, cost, selling price, margin and markup. Performs cash-flow analysis for up to 24 uneven cash flows with up to four-digit frequencies. Calculator offers depreciation schedules; two day-count methods (actual or 30/360) to calculate bond price or yield to maturity or to call; list-based one-variable and two-variable statistics with four regression options: linear, logarithmic, exponential and power. Math functions include trigonometric calculations, natural logarithms, and powers. Design also features 10-digit display and 10 user memories. Automatic power-down conserves power. Calculator includes a protective slide case and one lithium 2032 battery. Manufacturer: Texas Instruments, Inc Manufacturer Part Number: BAIIPLUS Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Model: BAIIPLUS Product Name: BAIIPLUS Financial Calculator Product Type: Business/Financial Calculator Technical Information: Functions: NPV IIR Break-even calculation Interest conversion Delta percent Profit and loss Cost Selling price Margin Markup Linear Logarithmic Exponential Trigonometric calculation Natural logarithm Battery Information: Power Source: Battery Physical Characteristics: Color: Dark Gray Package Contents: BAIIPLUS Financial Calculator 1 x Lithium 2032 Battery 1 x Impact-resistant protective cover with quick reference card Slide Case

Canon 2-color Mini Desktop Printing Calculator and Desktop Calculator $99.76 These calculators come with an AC adapter and four Duracell batteries. The printing calculator prints 2.3 lines-per-second and the desktop calculator features a convenient upright angle display.Comes with AC adapter and four Duracell AA BatteriesP27-DH Printing Calculator12-digit, two-color printing calculatorBuilt-in, durable metal paper holderExtra large display for easy viewingUseful tax, cost-sell-margin, time calculation, clock and calendar functionsPrints 2.3 lines-per-secondInk roller: CO-13Decimal point +023FWS-112H Desktop Calculator12-digit mini desktop calculatorLarge upright angle display for easy viewing

73 Explorer Graphic Calculator $176.62 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: 73/CLM/1L1/C Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Line: Explorer Product Name: 73 Explorer Graphic Calculator Product Type: Graphing Calculator Technical Information: Functions: Pictographs Pie charts Bar charts English and metric conversions Function elevation table Interactive equation solver Change improper fractions to mixed number Simplifies fractions Fraction/decimal conversions Combinations Permutations Trigonometry Logarithm Antilogarithm Convert angles from degrees to radians List-based one and two-variable statistics including ,Linear , Quadratic , Exponential , Med-median , Manual-fit regression models Battery Information: Power Source: Battery

Casio Overhead Projectable Calculator $201.56 Many of our classroom calculators have a compatible overhead projectable model for teachers. Each unit functions in the same manner as its conventional counterpart, except that is equipped with a transparent screen. Overhead Projectorable Calculator. Works with the FX-300ES. Manufacturer: Casio Computer Co., Ltd Manufacturer Part Number: OH300ES Manufacturer Website Address: www.casio.com Brand Name: Casio Product Name: Overhead Projectable Calculator Product Type: Scientific Calculator Technical Information: Functions: Degrees Radians Gradians Percentage Square root Fractions Trigonometric Logarithm Roots & powers Exponent Reciprocal Coordinate conversion Degrees/minutes/seconds Negative Indicator Hyperbolics Table of a function Engineering Symbol Calculations Combinations Permutations Standard deviation Linear Regression Logarithmic regression Exponential regression Power regression Quadratic regression Inverse regression Random numbers Battery Information: Power Source: Battery

Casio Printing Calculator $124.67 Heavy-duty 12-digit calculator features a large, digitron display. Two-color ink ribbon printer prints 4.4 lines per second on 2-1/4 plain paper. Functions include cost/sell/margin calculation, floating and fixed (0-6) decimal, item counter, independent memory, printing reference numbers, tax calculation, automatic constants, independent add register, grand total, MU/MD, right shift key for quick correction, round off, round up, cut off and ADD mode. AC operation. Standard 2-1/4 paper included. Weighs 3.7 lb. Manufacturer: Casio Computer Co., Ltd Manufacturer Part Number: DR210TM Manufacturer Website Address: www.casio.com Brand Name: Casio Product Name: Printing Calculator Product Type: Printing Calculator Technical Information: Functions: Cost, Sell, Margin Calculation Tax Function Mark Up Mark Down 3 digit comma markers Decimal Selector Grand Total Independent Memory Subtotal Total Battery Information: Power Source: AC Supply

Casio PRIZM FX-CG10-IH Graphing Calculator $249.55 Manufacturer: Casio Computer Co., Ltd Manufacturer Part Number: FX-CG10-IH Manufacturer Website Address: www.casio.com Brand Name: Casio Product Line: PRIZM Product Model: FX-CG10-IH Product Name: PRIZM FX-CG10-IH Graphing Calculator Product Type: Graphing Calculator Display & Graphics: Display Screen: – LCD Physical Characteristics: Color: Blue

Hewlett-Packard 12C Financial Calculator $178.77 The HP 12C Programmable Financial Calculator is perfect for professionals and students alike. With over 120 built-in functions for business, finance, mathematics, and statistics, the HP financial calculator will be an invaluable tool to your financial future.FeaturesKeystroke programming99 step memory capacity Bond calculationsDepreciation calculationsAmortization calculations

Ti-84 Plus Graphing Calculator for Dummies $17.48 If you have a T1-84 Plus Graphing Calculator, you have a powerful, sophisticated tool for advanced math. In fact, it?s so sophisticated that you may not know how to take advantage of many of its features and functions. That?s a good problem to have, and TI-84 Plus Graphing Calculator For Dummies is the right solution! It takes the TI-84 Plus to the next power, showing you how to: Display numbers in normal, scientific, or engineering notations Perform basic calculations, deal with angles, and solve equations Create and investigate geometric figures Graph functions, inequalities, or transformations of functions Create stat plots and analyze statistical data Create probability experiments like tossing coins, rolling dice, and so on Save calculator files on your computer Add applications to your calculator so that it can do even more TI-84 Plus Graphing Calculator For Dummies was written by C.C. Edwards, author of TI-83 Plus Graphing Calculator For Dummies, who has a Ph.D. in mathematics and teaches on the undergraduate and graduate levels. The book doesn?t delve into high math, but it does use appropriate math examples to help you delve into: Using the Equation Solver Using GeoMaster and its menu bar to construct lines, segments, rays, vectors, circles, polygons, perpendicular and parallel lines, and more Creating a slide show of transformations of a graph Using the Inequality Graphing application to enter and graph inequalities and solve linear programming problems There?s even a handy tear-out cheat sheet to remind you of important keystrokes and special menus, And since you?ll quickly get comfortable with the built-in applications, there?s a list of ten more you can download and install on your calculator so it can do even more! TI-84 Plus Graphing Calculator For Dummies is full of ways

The Planets in Our Solar System $12.32 This is an introduction to the planets of our solar system and their individual characteristics.

Solar Power (Hardcover) $45.9 Discusses the use of solar power as an alternative energy source, describes how solar cells work to transform solar power into electricity, and explains the environmental advantages to using solar power.

Quilter's FabriCalc Quilt Design Calculator $39.55 Quilters' fabric calculator makes a great addition to your sewing accessoriesFabric calculator simplifies quilt planningTake pride in a finished quilt that starts with accurate measurementsQuilt design and fabric estimating calculator will calculate total quilt yardage, including borders, binding and backingFind correct amount of fabric needed for blocks, squares, triangles and diamondsEasy-to-use fabric calculator works as a regular calculator Includes a long-life battery, reference guide and illustrated user's guide

SIIG Solar Battery Power Adapter $90.52 SOLAR PORTABLE BATTERY CHARGER PWR SOLAR PWRD ON-THE-GO BATT CHARGER

Stansport Hand Crank/Solar Battery Radio/Flashlight $71.7 Solar Radio Flashlight

83 Plus Graphics Calculator $248.29 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: 83PL/CLM/1L1/G Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Name: 83 Plus Graphics Calculator Product Type: Graphing Calculator Technical Information: Functions: 10 rectangular functions 6 parametric expression 6 polar expressions 3 recursively-defined sequences Function evaluation table shows numeric evaluation of functions in table format Sequence graphing mode shows ,Time series plot ,Cobweb/stair-step plot , Phase plot Interactive analysis of function , Values , Roots , Maximums , Minimums , Integrals , Derivatives Matrix operations including , Inverse , Determinant , Transpose , Augment , Reduced row echelon form ,Elementary row operations , Convert matrices to lists and vice-versa List-based one- and two- variable statistical analysis including ,Logistic , Sinusoidal , Median-median ,Linear , Logarithmic , Exponential , Power , Quadratic polynomial , Cubic polynomial , Quadratic polynomial regression models 3 statistical plot definitions for , Scatter plots , Xy-line plots , Histograms , Regular and modified box-and-whisker plots , Normal probability plots Advanced statistics features including , 9 hypothesis testing functions , 6 confidence interval functions ,One-way analysis of variance 15 probability distribution functions including , Normal , Student-t ,Chi-square , Binomial , Poisson Business functions including , Time-Value-of Money (TVM) , Cash flows , Amortization Battery Information: Power Source: Battery

Silver Edition Graphics Calculator $3077.66 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: 84PLSE/TPK/1L1/B Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Name: Silver Edition Graphics Calculator Product Type: Graphing Calculator Technical Information: Functions: 10 rectangular functions 6 parametric expressions 6 polar expressions 3 recursively-defined sequences Sequence graphing mode shows , Time series plot , Cobweb/stair-step plot , Phase plots Interactive analysis of function Values , Roots , Maximums , Minimums , Integrals , Derivatives Matrix operations including Inverse , Determinant , Transpose , Augment , Reduced row echelon form , Elementary row operations , Convert matrices to lists and vice-versa List-based one- and two-variable statistical analysis including Logistic , Sinusoidal , Median-median , Linear , Logarithmic , Exponential , Power , Quadratic polynomial , Cubic polynomial , Quartic polynomial regression models 3 statistical plot definitions for Scatter plots , Xy-line plots , Histograms , Regular and modified box-and-whisker plots , Normal probability plots Advanced statistics features including 9 hypothesis testing functions , 6 confidence interval functions , One-way analysis of variance 15 probability distribution functions including Normal , Student-t , Chi-square , Binomial , Poisson Business functions including Time-Value-of-Money (TVM) , Cash flows , Amortization , Full screen interactive editor for solving TVM problems Battery Information: Power Source: Battery

Texas Instruments TINSPIRECAS Graphic Calculator $290.91 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: NSCAS/PWB/1L1 Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Model: TINSPIRECAS Product Name: TINSPIRECAS Graphic Calculator Product Type: Graphing Calculator Technical Information: Functions: Built-in CAS (Computer Algebra System) Handheld Battery Information: Power Source: Battery

Franklin LRL-200 Webster's Spell Check and Calculator $31.87 Keep your words written correctly and math done perfectly with this Franklin calculator and spell check tool. This Webster's spell check and calculator is the perfect tool for learning and growing.Full key board for spell checkSlide-out number key pad for calculator activationDimensions: 4 inches long x 3 inches wide x 2.5 inches thickModel: LRL-200

Dinos Illustrated Map of the Solar System $14.95 This childrens map of the solar system is generously illustrated with cartoon images of planets, comets, stars, spaceships, and many other features. The images are cross referenced to a listing of facts, and encourage interaction with children to further their knowledge of the universe. Children and those young at heart will be entertained for hours by this fascinating map Children can explore the heavens with this beautifully illustrated wall map. It features colorful cartoon icons making the map educational fun. Next to each illustrated significant space mission is its name reference number. The index then provides its name, reference number, sponsor, date of launch, why it is significant. On the left side of the map a chart gives the symbol, name, significant data, mass, diameter, distance from the sun, revolution period, rotation period, temperature, number of natural satellites for each major celestial body of this solar system. Similar data about our moon (in relation to Earth rather than the sun) is also shown. Below the chart are definitions of the measurement units used in astronomy, URLs for more info on the solar system, info about the minor celestial bodies of the solar system. The top of the map features diagrams covering real relative size of the major celestial bodies of the solar system; solar lunar eclipses; lunar phases; configuration of the planets; seasons of the northern southern hemispheres; higher lower flood tides; meteor storm radiant; layers of atmosphere; greenhouse effect; diagram of launches falling, entering orbit, or entering space free from gravitational pull; structural diagrams of our sun, Earth, Jupiter, a comet. Not just a pretty picture, a great deal of effort research was put into this map. Experts in the fields of history, geology, astronomy, climatology participated actively in creating a product of the highest possible quality. The maps heavy paper and glossy UV finish makes it extra durable for hours of fun

Texas Instruments TI-30XS Scientific Calculator $54.01 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: 30XSMV/TBL Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Model: TI-30XS Product Name: TI-30XS Scientific Calculator Product Type: Scientific Calculator Technical Information: Functions: 7 memory variables x10n key for quick input of numbers in powers of 10 One- and two-variable statistics Convert angles from degrees to radians to grads Logs and antilogs Hyperbolics Trigonometry Combinations and permutations Battery Information: Power Source: Battery

Texas Instruments TI-34 MultiView Calculator $66.48 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: 34MV/TBL/1L1/A Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Line: MultiView Product Model: TI-34 Product Name: TI-34 MultiView Calculator Product Type: Scientific Calculator Technical Information: Functions: Middle School Math Pre-Algebra Algebra I & II Trigonometry General Science Geometry Biology Decimal, fraction and percent Power, Roots, and Reciprocals Exact Radicals One and Two Variable Statistics Battery Information: Power Source: Battery

Solar Energy Demystified (Paperback) $27.97 Heat up your understanding of solar energyThis easy-to-follow guide covers the latest information, technologies, and calculations on solar power. The book helps you determine if solar energy is right for you, and, if so, how you can incorporate it into your everyday life.Solar Energy Demystified describes the different types of solar electricity, including photovoltaics, solar thermal, and solar chemical technologies. Helpful photos of solar energy implementations from around the world are included.

Texas Instruments TI-15 School Calculator $56.09 From the kitchen table to the playground, children are intrigued by their world. The TI-15 is a pedagogically sound tool that helps students make connections between classroom learning and real-world situations.The TI-15 combines the fraction capabilities of the Math Explorer with a two-line display, problem solving, place value and more. When the TI-15 is combined with traditional learning tools, it helps students explore their world through investigation and experimentation, and helps develop skills in addition, subtraction, powers, and answer format. Manufacturer: Texas Instruments, Inc Manufacturer Part Number: 15/TBL/2L1/A Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Model: TI-15 Product Name: TI-15 School Calculator Product Type: Scientific Calculator Technical Information: Functions: Powers and square root Symbolic pi Convert pi to decimal Conversions between improper fractions and mixednumbers Conversions between fractions, decimals and percents Battery Information: Power Source: Battery Package Contents: TI-15 School Calculator Teachers Guide in English and Spanish Classroom activities Calculator poster and transparency

New Views of the Solar System (Hardcover) $70.2 Presents a collection of articles that describe the planets of the Solar System.

Concept Green Solar Panel Battery Power Adapter $51.95 Solar Charger 1250 mAh Black

Buxton Leather Cal Q Zip-around Folio $77.58 This stylish Buxton leather Cal-Q zip-around organizer lends a touch of fashion with a unique design yet is still professional looking. This folio features a deep embossed croc print on the exterior.Color options: Black, brownLarge exterior slip pocketPadded handleRemovable adjustable clip shoulder strapEasy zip tab pullerLarge interior gusseted document pocket Three loop pen holdersFive credit card pocketsSolar full-function calculatorStrong, durable three-ring binderRemovable, replaceable lined writing pad

Casio CLASSPAD 330 Graphic Calculator $328.32 The ClassPad 330 comes with all the functions of the ClassPad 300 including an impressive collection of applications that support self-study, like 3D Graphing, Geometry, eActivity for creating discovery based lessons and lots more. Additional features of the ClassPad 330 include upgraded CAS Technology and Geometry Application, new AP Statistics functionality, and three new applications Differential Equation Graph, Financial and Probability. Manufacturer: Casio Computer Co., Ltd Manufacturer Part Number: CLASSPAD330 Manufacturer Website Address: www.casio.com Brand Name: Casio Product Line: ClassPad Product Model: CLASSPAD 330 Product Name: CLASSPAD 330 Graphic Calculator Product Type: Graphing Calculator Technical Information: Functions: Mathematics Functions Computer Math Discrete Math Geometry Trigonometry Stats & Data Analysis Calculus Useful Education Features Science Finance Display & Graphics: Display Screen: – LCD Battery Information: Power Source: Battery

HP 12c Platinum Financial Calculator $180.77 The HP 12c Platinum is a powerful tool capable of handling the most complex and detailed financial calculations. Users of the HP 12c Platinum will enjoy the flexibility this calculator offers with both RPN and algebraic modes of entry, the increased memory capacity and the more-than 130 built-in functions. Easily calculate loan payments, interest rates and conversions, standard deviation, percent, TVM, NPV, IRR, cash flows, bonds and more. Ideal for real estate, finance, accounting, economics and business work. Permitted for use on the CFP and CFA Certification Exams, and GARP FRM Exam. Manufacturer: Hewlett-Packard Manufacturer Part Number: F2231AA#ABA Manufacturer Website Address: www.hp.com Brand Name: HP Product Model: 12c Platinum Product Name: 12c Platinum Financial Calculator Product Type: Business/Financial Calculator Technical Information: Functions: Time and Date Management: Date arithmetic Editing Features: Undo Backspace keys Business/Finance Features: TVM (loans, savings and leasing) Amortization Bond price and yield to maturity Cash flow analysis NPV IRR Memory for up to 80 cash flows SL, DB, SOYD depreciation methods % change % of total Statistical Functions: Cumulative statistical analysis Standard deviation, mean, weighted mean Linear regression Forecasting, correlation coefficient Total, Sx, Sx2, Sy, Sy2, Sxy2 +, -, x, , %, 1/x, , LN, ex, n! Battery Information: Power Source: Battery Package Contents: 12c Platinum Financial Calculator Battery User Manual Anniversary Edition Leather Pouch Solutions Handbook

The Math Student`s Guide to the Ti-89 Graphing Calculator (VHS) $117.27 (126 minutes.) Video designed for students who are new to the graphing calculator or who would like to brush up on their skills.

The Math Students Guide to the Ti-83 Plus Graphing Calculator (VHS) $113.41 (105 minutes.) Video designed for students who are new to the graphing calculator or who would like to brush up on their skills.

Dinos Solar System 500 Piece Jigsaw Puzzle $9.95 This colorful informative Solar System puzzle is made especially for children. Heavily illustrated with fun pictures, icons and descriptive text, this puzzle can keep children entertained for hours on end. The illustrations depict planets, stars, comets, and much more. Not only is this puzzle fun to build and fun to look at, but it is educational as well. Adults and children of all ages (designed for ages 7 and up) will enjoy the fun nature of this one-of-a-kind and unique puzzle of The Solar System.

Whitaker`s Almanack Pocket Reference 2012 (Paperback) $18.84 Whitaker’s Almanack Pocket Reference contains a world of fascinating facts and figures covering a broad spectrum of categories, all in one handy guide perfect for tackling  crosswords, school quizzes and for general knowledge. From sports to science, politics to places, and music to math, this edition is an invaluable source of information, providing access to facts and figures—fast. Contents include: the solar system, world geographical statistics, countries of the world, time zones, currencies, religion, the periodic table, film and television, mathematics, weights and measures, alphabets and symbols, royalty, language.

Diy Solar Projects (Paperback) $38.29 Advances in solar technology have made many DIY-friendly products available to consumers. ,several of which will be hitting the market for the first time in 2011. These include solar water heaters, solar battery charging stations, solar powered lights, photovoltaic shingles that provide supplementary electricity, solar heat pumps, and solar panel kits that generate primary home electrical service. Among the step-by-step projects is a solar water heating system you can build and install yourself for under $1000; simple thermosyphon solar heat collectors for barns and outbuildings; or "heat grabbers" that you can fabricate for $50 in materials and position below a south-facing window to provide auxiliary winter heat.  

Texas Instruments TI-Nspire Graphing Calculator $388.04 TIs first graphing calculator that operates like a computer. Simpler keypad with separated alpha keys makes navigation through screens, menus and the math objects easier. It includes computer algebra system (CAS) that performs symbolic and numeric calculations seamlessly. Manufacturer: Texas Instruments, Inc Manufacturer Part Number: N2/CLM/1L1 Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Model: TI-Nspire Product Name: TI-Nspire Graphing Calculator with Touchpad Product Type: Graphing Calculator Technical Information: Functions: Algebra Geometry PreCalculus Calculus Statistics Physics Battery Information: Power Source: Battery

Sun-Mar Solar Panel: S $142.5 Assembled H x W x D: 1 x 14 x 12” 10 watt, 12 volt solar panel for powering Sun-Mar 12 volt fans or any other suitable application. *10 Watts

iceTECH SOLAR i101 Portable Solar Charger/ Battery $51.72 The Solar charger i101 from iceTECH charges most mobile phones or USB interface digital products, such as MP3/MP4 players, that have operational voltage of 3.5-6 volts. The Solar battery itself can be charged using direct sunlight or by plugging it into an electric outlet. Once the solar battery is charged it can be used to charge other devices Solar-to-electric power transformer with high (18-percent+) transforming rateProvides fast-charging of your mobile electronic devicesProfessional overcharge protection circuit when charging the SOLAR from DCHigh-temperature protection when charging from sunlightCellular phone charging time: Approximately 60 minutesBattery charging time, 0 to full via solar energy: 8 to 12 hoursBattery charging time, 0 to full via DC: 3 to 5 hoursSpecifications:Solar panel peak photocell power: 5.5V/80mASolar panel operating voltage: 5.5V (max) Solar charger battery capacity: 1350mAhSolar charger output voltage: 5.5VSolar charger output current: 1A (max)Solar charger input interface: DC/Solar interfaceOutput interface: USB interfaceMaterial: Metal, fireproof plasticLED display: Charging/fullControl switch: On/offPackage contains: Five various adapters, DC power cordDimensions: 3.75 inches x 1.5 inches x 0.3 inchesWeight: 0.22 pounds

84 Plus Silver Graphic Calculator $330.4 Manufacturer: Texas Instruments, Inc Manufacturer Part Number: 84PLSE/CLM/1L1/E Manufacturer Website Address: www.ti.com Brand Name: Texas Instruments Product Name: 84 Plus Silver Graphic Calculator Product Type: Graphing Calculator Technical Information: Functions: Graphs 10 rectangular functions, 6 parametric expressions, 6 polar expressions, and 3 recursively-defined sequences Sequence graphing mode shows time series plot, cobweb/stair-step plot, and phase plots Interactive analysis of function values, roots, maximums, minimums, integrals, and derivatives Matrix operations including inverse, determinant, transpose, augment, reduced row echelon form, and elementary row operations.Convert matrices to lists and vice-versa List-based one- and two-variable statistical analysis, including logistic, sinusoidal, median-median, linear, logarithmic, exponential, power, quadratic polynomial, cubic polynomial, and quartic polynomial regression models 3 statistical plot definitions for scatter plots, xy-line plots, histograms, regular and modified box-and-whisker plots, and normal probability plots Advanced statistics features including 9 hypothesis testing functions, 6 confidence interval functions, and one-way analysis of variance 15 probability distribution functions including Normal, Student-t, Chi-square, Binomial, and Poisson Business functions including Time-Value-of-Money (TVM), cash flows, and amortization Battery Information: Power Source: Battery

Potato Clocks and Solar Cars $16.44 Examines different sources of energy, including fossil fuels as well as solar, nuclear, wind, biomass, hydroelectric, and geothermal energy.

Solar Food Dryer $22.32 The Solar Food Dryer describes how to use solar energy to dry your food instead of costly electricity. With your own solar-powered food dryer, you can quickly and efficiently dry all your extra garden veggies, fruits, and herbs to preserve their goodness all year long?with free sunshine! Applicable to a wide geography?wherever gardens grow?this well-illustrated book includes:? Complete step-by-step plans for building a high-performance, low-cost solar food dryer from readily available materials ? Solar energy design concepts ? Food drying tips and recipes ? Resources, references, solar charts, and moreEben Fodor is an organic gardener with a background in solar energy and engineering. He works as a community planning consultant in Eugene, Oregon.

Scosche sunVOLT SOLBAT2 Solar Handheld Device Battery $75 Solar Pwrd B/U Battery & Chrgr

HP 39gs Graphic Calculator $165.19 Split Screen Graphing Calc

National Geographic Solar System Wall Map $16.95 Explore our Solar System with this 2-sided illustrated map of the planets orbits. Known the world over for their detail and accuracy, National Geographic Maps set the standards we have all come to expect. Used by Presidents and foreign dignitaries alike, these maps represent exhausting research. NG maps make great use of color and extensive detail for type placement to aid readability. Whether it is international business, the desire to know where events are taking place, or to find the longest river, National Geographic Maps are right for you.

Solar Coaster – Solar Coaster $17.91 Track Listing:SporesLikeness Of No OneLocal CrownSoft SpotPlastic Heart GrenadeFrom The HeadKarmagedonJetawayZero SumFlat DownHallmarkDeclarationEndless StoriesAnonymousDuo ToneDoris Daze, TheFar CryWant It To BeMatter@HandBodies Unmanned

Trademark Tools 16-foot Tape Measure with LED Calculator $20.77 The work doesnt stop when the sun goes down and neither should you. Keep on going with this LED lit self locking tape measure. It even has a calculator and note pad built in for quick, accurate measurements. Swift release lock button helps you to control the speed the tape measure retracts to avoid those annoying tape measure cuts. The 16 foot tape measure comes with a belt clip too for easy access.16 feet longCalculatorNote padSelf lockingSwift release button for tape retractionLED light for easy viewing in the darkLight runs on 2: CR2016 3V Lithium Button Cell Batteries and calculator runs on one AG10 Button Cell Battery which are all factory installed3.125 inches long x 2.5 inches wide x 2 inches thick

My Personal Banker Monthly Budget Calculator $21.73 Keep your monthly budget on track with this convenient personal banking calculator. Simply put in your monthly allowance for each category and you are all set. Each time you spend money in a particular category, enter the amount spent and the calculator will tell you your remaining balance and total spent for the entire month. 6 budget categoriesCompact size can fit in your purseKeep your budget on trackMeasures 3 inches long x 3.875 inches wide x 1 inch thickRequires three (3) AAA batteries (not included)

Solar System (Hardcover) $35.43 A guide to the solar system provides a photographic tour of its eight planets, as well as asteroids and comets, and presents its history from its birth to the present.

Solar Car Book (Hardcover) $33.88 The Solar Car Book is full of illuminating solar science facts and comes with everything you need to build a cool solar-powered racecar: wheels, axles, motors, wires and a genuine one-volt solar cell. No glue, no nails, no tape and (best of all) no batteries required. Build this car today and it will run forever, thanks to that big battery in the sky. This book includes rubber bands that contain Natural Rubber Latex which may cause allergic reactions.Comes With: 6 pages of shrink plastic• Create wonderful things • Be good • Have fun

Solar Cells and Their Applications (Hardcover) $266.56 This Second Edition has been updated to reflect the advances that have taken place since publication of the previous edition. The book draws upon basic physics and engineering principles coupled with key economic, market, business, investment, and policy factors to explain the current status of solar cells and how their applications will expand over the next few decades. This new edition is of interest to technologists in the fields of solar cells and systems, academics studying microelectronics, semiconductors, and solar cells, and business students and investors with a technical focus.

Solar Water Heating (Paperback) $31.11 Heating water with the sun is a practice almost as old as humankind itself. Solar Water Heating, now completely revised and expanded, is the definitive guide to this clean and cost-effective technology. Beginning with a review of the history of solar water and space heating systems from prehistory to the present, Solar Water Heating presents an introduction to modern solar energy systems, energy conservation, and energy economics. Drawing on the authors’ experiences as designers and installers of these systems, the book goes on to cover: Types of solar collectors, solar water, and space heating systems and solar pool heating systems, including their advantages and disadvantages System components, their installation, operation, and maintenance System sizing and siting Choosing the appropriate system This book focuses on the financial aspects of solar water or space heating systems, clearly showing that such systems generate significant savings in the long run. With many diagrams and illustrations to complement the clearly written text, this book is designed for a wide readership ranging from the curious homeowner to the serious student or professional. Bob Ramlow has been involved in renewable energy system sales, installation, and manufacturing since 1976. He is an IREC/ISPQ certified solar thermal independent master trainer and a NABCEP certified solar thermal installer. He writes and teaches workshops about solar energy. Benjamin Nusz has worked as an installer, site assessor, designer, and consultant for solar thermal systems. He currently trains renewable thermal technicians at Mid-State Technical College in Wisconsin.

Solar (Hardcover) $36.78 The literary event of the summer: a new novel from Ian McEwan, as surprising as it is masterful. Michael Beard is a Nobel prize¿winning physicist whose best work is behind him. Trading on his reputation, he speaks for enormous fees, lends his name to the letterheads of renowned scientific institutions, and half-heartedly heads a government-backed initiative tackling global warming. While he coasts along in his professional life, Michael¿s personal life is another matter entirely. His fifth marriage is crumbling under the weight of his infidelities. But this time the tables are turned: His wife is having an affair, and Michael realizes he is still in love with her. When Michael¿s personal and professional lives begin to intersect in unexpected ways, an opportunity presents itself in the guise of an invitation to travel to New Mexico. Here is a chance for him to extricate himself from his marital problems, reinvigorate his career, and very possibly save the world from environmental disaster. Can a man who has made a mess of his life clean up the messes of humanity? A complex novel that brilliantly traces the arc of one man¿s ambitions and self-deceptions, Solar is a startling, witty, and stylish new work from one of the world¿s great writers.

HP F2226A 48GII Powerful Graphing and Scientific Calculator $111.2 Powerful graphing and scientific calculator. View 3D graphs and 2- and 3-D plots and other functions with ease on the comfortably sized display. Great for demanding engineering, scientific or math calculations.Manufacturer: HPModel number: F2226AProduct type: CalculatorPowerful graphing and scientific calculator. View 3D graphs and 2- and 3-D plots and other functions with ease on the comfortably sized display.Includes over 2,300 functions and a huge built-in constant library. Lets you easily solve complex problems in engineering, physics, surveying, trigonometry, calculus, statistics, geometry and more.3 entry formats to choose from. Select the input method that works best for you: familiar textbook, traditional algebraic or efficient RPN.Supports structured programming for creating applications. 128KB total memory (80.7KB available to the user) let you run programs and store data.Serial port lets you transfer data. Great for classroom or lab work that requires communication for experiments.Permitted for use on many standardized tests. Can be used for for SAT Subject Tests in Mathematics Levels 1 and 2, PSAT/NMSQT, AP Calculus, AP Statistics, AP Chemistry, AP Physics and more.Dimensions: 3.1 inches wide x 0.5 inches deep x 4.5 inches highWeight: 2.0 poundsPackage contents: Calculator, mini USB to serial cable, backup battery, bag, manual software CD, 3 x AAA batteries

Solar Hydrogen (Hardcover) $230.63 Renewable hydrogen produced using solar energy to split water is the energy fuel of the future. Accelerated innovation in both major domains of solar energy (photovoltaics and concentrated solar power) has resulted in the rapid fall of the solar electricity price, opening the route to a number of practical applications using solar H2. New thermochemical water splitting using concentrated solar power (CSP) as well as CSP coupled to electrolysis has the potential to convert and store solar energy into clean hydrogen using a tiny fraction of the world`s desert area to meet our present and future global energy needs. Photovoltaics, in turn, has the versatility required for supporting the creation of a distributed energy generation infrastructure in developing countries especially now that the price of PV solar electricity has fallen to unprecedented low levels. In all these cases, solar H2 will be used to store energy and release it on demand either for fuel cells (to power homes and boats) or internal combustion engines and turbines (for powering cars, trucks and in thermoelectric power units). This book on solar hydrogen is unique in its field and is a timely treatment of a hot topic in industry, academic, political and environmental circles. With reference to many examples as well as to new technologies, this accessible book provides insight into a crucial technology for our common future and numerous colour pictures contribute to the book`s readability. Written by experts in the field who are engaged at the forefront of research, the book supplies readers with last minute insight from the frontiers of research. The book will be of interest to Politicians, solar PV companies, hydrogen and sustainability researchers, environmentalists, managers in the automotive and nautical industries, undergraduate and graduate students in physics, chemistry, energy and materials science.

TI-83 Plus Graphing Calculator For Dummies (Paperback) $21.61 Use this cool tool to perform dozens of tasks! Do simple and complex calculations, analyze loans, even send files to your PC Nothing can crunch numbers like your TI-83 Plus, and this handy guide makes the crunching easy! In no time you’ll be punching those buttons to convert decimals to fractions, find factorials, compare interest rates, graph and analyze functions and sequences, tame random numbers, manage matrices, and even have your calculator sharing stuff with your PC. The Dummies Way Explanations in plain English "Get in, get out" information Icons and other navigational aids Tear-out cheat sheet Top ten lists A dash of humor and fun Discover how to: Solve equations and systems of equations Graph functions, parametric equations, and sequences Use complex numbers Multiply, reduce, and solve matrices Add applications to your calculator