A what? Radiometer is just a fancy name for this Solar Engine. It demonstrates the principles of energy conversion and shows how heat and mechanica...View full details
Student grade bulb thermomer. Ranges from -35 to 50 degress celcius and -30 to 120 degrees fahrenheit. Measured in 2 degree subdivisions. Do not ...View full details
Vortex action? Potential energy being converted to kinetic energy? Centrifugal force? If you‚Äôve never seen the Tornado Tube¬Æ in action you may n...View full details
This spirit filled soil probe thermometer is suitable for measuring the temperature of soil and compost, ideal for the horticulturist ...View full details
Backpacker magazine's Predicting Weather brings you essential mind gear from the two most respected and reliable publishers of outdoor-related in...View full details
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