Quote by DrDu
You got the first formula wrong, it is dS= dQ /T

This confuses me, surely as the heat added increases ( dQ), then the temperature will also increase, so it should be (dT)
Unless T is a different constant for each example?
In the first few seconds of this video
http://www.youtube.com/watch?v=xJf6pHqLzs0
it is said that "if the temperature is changing while we add the heat, which is normally the case, then we'l have to do some calculus"
khanacademy is usually a pretty reliable source, so what did he mean by this if the formula is actually dS= dQ /T