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Want temperature scale where energy is proportional to T
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Celsius
scale is “arbitrary” (Fahrenheit
even more so)
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0o C
= freezing point of water
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100o C = boiling point of water
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By experiment, energy = 0 at “Absolute Zero” = –273oC (-459.7oF)
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Define “Kelvin” scale with same step size as Celsius, but 0K =
-273oC =
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Absolute
Zero
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Use Kelvin Scale for most of work in this course
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Available
energy is proportional to T, making equations simple (really!
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OK,
simpler)
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273K
= freezing point of water
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373K
= boiling point of water
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300K approximately room temperature
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