Originally Posted by
GlassMan
30 degrees below is possible as long as you're using the Fahrenheit scale.
It's also possible on the Centegrade scale. The only temperature scales that I know of where 30 below zero in not possible are Kelvin and Rankine. Both of those are based not on the freezing point of water but on "absolute zero, which is defined at the temperature at which all molecular motion ceases. On the Kelvin scale, water freezes at 273 deg, and boils at 373 deg.
"A day spent in the fields and woods, or on the water should not count as a day off our allotted number upon this earth."
Jerry, Kilted Old Fart.
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