
4 0 c m
34cm
actual image size: 26cm x 32cm
Description
In this exhibit a mixture of gases produces several different colours at once. When electricity flows through the gas in the ball, it creates plasma, made of atoms which have had some of their electrons knocked away. Energy from the electricity is changed into light - just as it is in a lightning flash.
Image Details
Image Ref.
10303982
© Science Museum / Science & Society Picture Library