So Kelvin made some absolute sero to calibrate his thermometer?
Post 1
Started conversation Dec 10, 2005
Traveller in Time 
dropping an aluminium sheet inside an MRI scanner
"How did mr Kelvin calibrate his equipment and should alcohol not also freeze near those temperatures.
Can I have a -273.15 for Celcius ?
How about hyperfuids, cooper pairs, and supercondutive cooled processors ? "