A set of ancient Babylonian tablets that describe how to track Jupiter across the sky have revealed an astronomical technique 1,500 years ahead of its time. Jupiter's erratic pace across the sky — ...

A horizontal line on a distance-time graph close distance-time graphA graph with distance travelled plotted on the vertical axis against time taken on the horizontal axis. shows that the object is ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...