This thermometer allows you to see the temperature by watching the balls sink and float in a beautiful sealed glass cylinder, as their densities are such that they rise or fall as the temperature changes. You can hang this one up as a beautiful display piece.
Measures between 16°C and 32°C
$14.95Caffeine molecule mug Decorated with cutting edge representations of the great ideas of science.
$44.95Learn all about thermodynamics with the Crookes Radiometer.When exposed to light or heat, the vanes will spin. Comes in 18cm and 22cm high models and makes for an educational decoration.