Thermometer Humidity Meter
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Ambient Weather WR-111 ADVENTURER Emergency Solar Hand Crank Digital AM/FM/NOAA Tuning Radio, Flashlight, Cell Phone Charger with NOAA Weather Alert List Price: $80.00 Sale Price: $35.00 |
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The ADVENTURER delivers complete independence from wall power or disposable batteries, ensuring sustainable access to vital information and the peace of mind that you'll never be without power. Power Specifications: Dynamo Power: The hand crank generator charges the internal NI-MH batteries Solar Power: You can play this radio with sunlight or charge the NI-MH batteries USB Power: With the included adapter, you can play or charge with USB power from a computer Rechargeable Power: 3V/800 mAh Maximum Power Consumption: 0... |
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Sanyo Eneloop Ni-MH Charger and 8 Rechargeable AA and 4 Rechargeable AAA Batteries List Price: $49.99 Sale Price: $29.79 |
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New, improved eneloop kit in colors eneloop - ready to use rechargeable battery. Since its launch in November 2005 eneloop has become well-known around the world as it has revolutionized the consumer-use rechargeable battery segment with its unique features: * rechargeable approximately 1,000 times * coming pre-charged, making it usable immediately after purchase * its unique design departing from the look of traditional batteries What is the difference between the "old" and the "new" improved eneloop? * An extra of 500 charging cycles - instead of being rechargeable 1000 times, the new eneloop is even rechargeable up to 1500 times... |
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Coby 4 GB Video MP3 Player with FM Radio (Blue) List Price: $34.99 Sale Price: Too low to display |
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Ambient Weather WS-1285 Wireless Weather Station with Thermometer, Hygrometer, Forecaster, Barometer, Atomic Clock List Price: $49.99 Sale Price: $26.99 |
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Features: Wireless outdoor and indoor humidity (%RH) Wireless outdoor and indoor temperature (°F or °C) Records min. and max temperature and humidity with Date and Time Barometric pressure history graph (in Hg or hPa) Forecast Icon Based on Changing Barometric Pressure Radio controlled time and date (WWVB & Dcf) Automatically updates for daylight saving time (on / off option) 12 or 24-hour time display Perpetual calendar Time alarm Includes one wireless remote sensor Wall hanging or free standing Low battery indicator Synchronized instant reception (SIR) Specifications: Wireless outdoor humidity range: 20% to 95% RH (+/-5% accuracy) Wireless outdoor temperature range: -40... |
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Store, transport and access your PowerPoint presentations, photos and important work or school documents. It provides easy access to your information in an affordable, convenient device. |
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HP v165w 16 GB USB 2.0 Flash Drive P-FD16GHP165-EF (Blue) List Price: $39.99 Sale Price: $13.50 |
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Store, transport and access your PowerPoint presentations, photos and important work or school documents. It provides easy access to your information in an affordable, convenient device. |
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Ambient Weather WR-111 ADVENTURER Emergency Solar Hand Crank Digital AM/FM/NOAA Tuning Radio, Flashlight, Cell Phone Charger with NOAA Weather Alert 2 Pack List Price: $160.00 Sale Price: $68.99 |
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The ADVENTURER delivers complete independence from wall power or disposable batteries, ensuring sustainable access to vital information and the peace of mind that you'll never be without power. Power Specifications: Dynamo Power: The hand crank generator charges the internal NI-MH batteries Solar Power: You can play this radio with sunlight or charge the NI-MH batteries USB Power: With the included adapter, you can play or charge with USB power from a computer Rechargeable Power: 3V/800 mAh Maximum Power Consumption: 0... |
Thermometer Humidity Meter

Psychrometer QUESTION?
A hygrometer is a meter that measures the humidity. The most common type of psychrometer hygrometer, which is two thermometers, one open to the atmosphere and the other wrapped in a damp cloth. The operating principle is that pyschrometer evaporation of water reduces wet wet bulb temperature of the bulb. Since the evaporation rate is directly related to relative humidity, the moisture can be determined by reading the temperature difference between the bulbs dry and wet. If the relative humidity is 100%, what is the difference in temperature between the wet bulb and dry bulb sling psychrometer? Why?
RH = 100% without evaporation of wet bulb, so that the temperature of the wet and dry is the same. The link below is a table to determine relative humidity of the wet bulb temperature and dry.


US $4.95


















