interesting facts

INTERESTING FACTS

• The temperature of an object is proportional to the average kinetic energy of the molecules in it. In ultra high vacuum (UHV), the density of molecules is extremely low. The kinetic energy cannot be measured and the temperature is undefined. If a thermometer is placed in vacuum the reading would be the measurement of the internal temperature of the thermometer, not of the vacuum which surrounds it.
• The direction of flow of heat is determined by temperature alone and not by total heat energy.
• The world record for the lowest temperature measured on earth is half a billionth of a Kelvin(or 0.000 000 000 5K), above absolute zero reported by a team from MIT