Some ways of talking about energy are clearer and more helpful than others.

Teaching Guidance 14-16

As the son of a Manchester brewer, privately tutored for several years by the chemist John Dalton, James Joule took an early...

Teaching Guidance 14-16

In physics, there is a standard way to work out how much energy has been transferred. It is to calculate the work done in a...

Teaching Guidance 14-16

Multiflash photography creates successive images at regular time intervals on a single frame.

Teaching Guidance 14-16

Energy is conserved. What does this really mean, and why is it true? Water in a reservoir is more or less conserved. So the...

Teaching Guidance 14-16