Each degree change in C is a 1.8 degree change in F. You're calculating what the temperature of 4 degrees C is in F, not what a change in 4 degrees C equates to in F.
Isn't that the Kelvin/Rankine conversion since the two don't map linearly? (also I always thought Farenheit was based on the coefficient of heat expansion of Mercury, but the truth is far weirder. Who would use this scale?!)
Each degree change in C is a 1.8 degree change in F. You're calculating what the temperature of 4 degrees C is in F, not what a change in 4 degrees C equates to in F.
Isn't that the Kelvin/Rankine conversion since the two don't map linearly? (also I always thought Farenheit was based on the coefficient of heat expansion of Mercury, but the truth is far weirder. Who would use this scale?!)