Factual series. Series 2. Explaining all the mysteries of the world of science in BSL! In this episode, Professor Knowitall and his assistants, Dr Spark and Dr Bright, explain electromagnetics. How does a rollercoaster take off so fast, and stop so quickly? What happens if you place the north and south sides of a magnet against one another? Dr Bright is sent on a ride on a magnetic vehicle to find out how magnets caused by electricity - electromagnets - can have a use in our everyday lives. Produced by Drip Media and Remark! Production for BSLBT.

This is Episode 2 of 4; you can watch Episode 1 (Aviation) here, Episode 3 (Light) here, and Episode 4 (Sound) here.