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Peer reviewedPowers, Michael H.; Hull, Stacey E. – Journal of Computers in Mathematics and Science Teaching, 1988
Explains the operation of five relative humidity sensors: psychrometer, hair hygrometer, resistance hygrometer, capacitance hygrometer, and resistance-capacitance hygrometer. Outlines the theory behind the electronic sensors and gives computer interfacing information. Lists sensor responses for calibration. (MVL)
Descriptors: Climate, Climate Control, Computer Uses in Education, Humidity
Peer reviewedGolden, Richard; Sneider, Cary – Science Teacher, 1989
Presents an example of a greenhouse-effect experiment from the Climate Protection Institute. Analyzes the amount of carbon dioxide in ambient air, human exhalation, automobile exhaust, and nearly pure carbon dioxide by titrating with ammonia and bromthymol blue. (MVL)
Descriptors: Chemical Analysis, Chemical Reactions, Chemistry, Climate
