How does a lightbulb work?

What's actually going on in a lightbulb when you switch it on? And why are energy saving bulbs more efficient than normal incandescent ones?...
18 February 2011
Presented by Sarah Castor-Perry

Naked_Scrapbook_Lightbulbs.jpg

Share

What's actually going on in a lightbulb when you switch it on? And why are energy saving bulbs more efficient than normal incandescent ones? Find out in the latest Naked Science Scrapbook.

Comments

Add a comment