1. The Kelvin scale is defined on the basis of the second law of thermodynamics. 2. Hence, the Kelvin scale is a ratio scale. 3. The entire "'scientific community "'measures "'temperature "'using the Celsius scale, and thermodynamic temperature using the Kelvin scale . 4. The coldest temperature possible on the Kelvin scale is 0 ( the temperature at which all molecular activity ceases ). 5. An exceptionally suitable system is the ideal gas, which can provide a temperature scale that matches the absolute Kelvin scale . 6. It is minus 273.15 degrees on the Celsius scale, minus 459.67 on the Fahrenheit scale and zero on the Kelvin scale . 7. Celsius temperature is measured on an interval scale, whereas the Kelvin scale has a true zero and so is a ratio scale. 8. It uses the Kelvin scale for measurement and selects the triple point of water at 273.16 K as the fundamental fixing point. 9. A system with a truly negative temperature on the Kelvin scale is " hotter " than any system with a positive temperature. 10. It is minus 273 . 15 degrees on the Celsius scale, minus 459 . 67 on the Fahrenheit scale and zero on the Kelvin scale .
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