You Are Here: Home / Learning / Science, Technology and Nature / The World Around Us / Glossary - underwater torch

Underwater Torch Challenge Glossary

Some of the key terms associated with making a torch

Electron - Tiny, negatively charged particles.

Ground - Normal.

Light bulb - Invented by Thomas Edison in 1879.

Filament - Wire.

The source can be anything that generates a reasonable voltage but is usually a battery.

Content last updated: 10/10/2006

Bookmark with:

Please wait while loading. You must have JavaScript enabled to view star ratings.

Two members of the Life team go in search of penguins in their natural environment. See what they find on Deception Island.

Would you say you're a Christian? Share your views, and learn about the views of others, in our new Christianity survey.

Keep up to date with our Twitterfeeds of latest news from Open2 and alerts of OU programmes on the BBC.