You've Got To Laugh Haven't You?
News1 min ago
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For more on marking an answer as the "Best Answer", please visit our FAQ.They are the same. Water freezes at 0 deg and boils at 100 deg. Centrigrade derives its name from the fact that there are 100 degrees between the melting and boiling points of water, Celsius is the bloke that invented it.
(insert discussion about altitudes, pressures, the fact that freezing point used to be 100 and boiling point 0, etc etc here)
I thought this had been asked recently but I can't find it so maybe I'm going mad.
Celsius is based on the triple point of water which is the unique combination of temperature and pressure where solid, liquid and gas co-exist - this helps in calibration of sensitive devices as you don't have to worry about what "atmospheric pressure" and as the difference is a fraction of a degree they're interchangable in everyday life.
There's a nice explanation here:
http://www.infoplease.com/ce6/sci/A0811058.html
Try this website. Fromy my knowledge they're one and the same thing. seems to say that above as well.