Three more astronomy videos still to do, before I go back and fix some of the mistakes that I’ve (and others) have found in some of the earlier videos.
The latest video is about what we can do with the electromagnetic radiation we detect from stars and galaxies. It includes a rather detailed derivation of the equation that students are given and expected to be able to use.
To watch all of the astronomy GCSE videos made so far, go here: https://youtube.com/playlist?list=PLmFthZ_IoSndnFRiDJ-SEGEuLsPx45odW
Physics with Keith 