Is Temperature Twice as Hot as Yesterday?

[Kushal]

Homework Statement

Comment on the statement 'Today the temperature is 40$$\circ$$C and yesterday it was 20$$\circ$$C 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$$\circ$$C is twice as hot as a body at 20$$\circ$$C. i guess I'm missing something...

any hint? thnks

 

[Irid]

Try expressing the temperatures in other units (Fahrenheit, Kelvin).

 

[Kushal]

ooo yeah... i should use the absolute scale right?!

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