what is absolute zero
Answers
Absolute Zero
The lowest temperature that is theoretically possible, at which the motion of particles which constitutes heat would be minimal. It is zero on the Kelvin scale, equivalent to −273.15°C.
Based on thermal expansion of gases, Kelvin scale is designed for measuring temperature. The kinetic energy of molecules becomes zero at -273°C (-273.15°C to be exact) and this temperature is taken as 0 K. This temperature is the absolute zero. The name absolute zero is derived on the basis that this is the lowest possible temperature. In this scale, the melting point of ice is 273 K.
Lord Kelvin
Lord Kelvin was a British scientist who designated the Kelvin scale. Born at Belfast in Ireland in 1824, his full name was William Thomson Baron Kelvin. He invented the Joule Thomson effect. It was he who calculated that the absolute zero is - 273.15 °C and its Fahrenheit value is -459.67°F. He passed away at the age of 83 on 17 December 1907 in Scotland.