Is Temperature Twice as Hot as Yesterday?

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The discussion centers on the misconception that a temperature of 40°C is twice as hot as 20°C. Participants suggest using absolute temperature scales, like Kelvin, to clarify the concept of "twice as hot." The importance of understanding temperature in terms of energy rather than just numerical values is emphasized. The conversation highlights a common confusion regarding temperature comparisons. Properly converting temperatures to an absolute scale resolves the misunderstanding.
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Homework Statement



Comment on the statement 'Today the temperature is 40\circC and yesterday it was 20\circC so it is twice as hot today as it was yesterday.'

The Attempt at a Solution



i feel that it is wrong to say that, although i think a body at 40\circC is twice as hot as a body at 20\circC. i guess I'm missing something...

any hint? thnks
 
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Try expressing the temperatures in other units (Fahrenheit, Kelvin).
 
ooo yeah... i should use the absolute scale right?!

i don't know why it was not obvious at the beginning... thnks:)
 

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