Light bulb: Difference between revisions
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[[File: | [[File:Lightbulby.jpg|thumb|300px|Figure 1. An incandescent light bulb.<ref>Flickr [Online], Available: https://www.flickr.com/photos/jamesrbowe/3338776771</ref>]] | ||
<onlyinclude>A '''light bulb''' is a device that converts [[electrical energy]] into [[light]].</onlyinclude> Modern [[incandescent light bulb]]s (see Figure 1) are highly inefficient, with about 90% of the [[energy]] supplied to them being lost as [[heat]].<ref>Bulbs. (Accessed Sept. 3, 2015). ''A brief history of the light bulb'' [Online], Available: http://www.bulbs.com/learning/history.aspx.</ref> This inefficiency sparked a need for a variety of more [[energy efficiency|efficient]] electrical lights, which spawned several alternatives to the traditional incandescent light bulb. These include: | |||
::*[[LED light bulb]]s | |||
::*[[CFL light bulb]]s | |||
::*[[Halogen light]]s | |||
Revision as of 18:01, 3 September 2015
Figure 1. An incandescent light bulb.[1]
A light bulb is a device that converts electrical energy into light. Modern incandescent light bulbs (see Figure 1) are highly inefficient, with about 90% of the energy supplied to them being lost as heat.[2] This inefficiency sparked a need for a variety of more efficient electrical lights, which spawned several alternatives to the traditional incandescent light bulb. These include:
References
- ↑ Flickr [Online], Available: https://www.flickr.com/photos/jamesrbowe/3338776771
- ↑ Bulbs. (Accessed Sept. 3, 2015). A brief history of the light bulb [Online], Available: http://www.bulbs.com/learning/history.aspx.