Halogen And Normal Incandescent Light Bulbs
by Amy Trustram Eve/science Photo Library
Title
Halogen And Normal Incandescent Light Bulbs
Artist
Amy Trustram Eve/science Photo Library
Medium
Photograph - Photograph
Description
Three 100-Watt light bulbs. They are (left to right): halogen, pearl envelope and clear envelope. The halogen bulb has a tungsten filament surrounded by low-pressure iodine gas and a quartz glass inner envelope. These effectively prevent the metal from the filament from subliming onto the inner glass, prolonging the bulb's life. This is needed as the halogen bulb runs at higher operating temperatures to give a more natural quality of light. The other bulbs are conventional domestic types, with a tungsten filament surrounded by an inert mixture of nitrogen and argon. They run at lower temperatures, giving a warmer colour. Their average life is 1,000 hours.
Uploaded
February 24th, 2021
Embed
Share
Similar Images
Comments
There are no comments for Halogen And Normal Incandescent Light Bulbs. Click here to post the first comment.
Recently Viewed
