Everything about Incandescent totally explained
Incandescence is the emission of
light (visible
electromagnetic radiation) from a hot body due to its temperature. The term derives from the verb
incandesce, to grow white.
The incandescence of a theoretically perfectly black object is known as
black body radiation, which is described by relatively simple mathematical equations. For a black body, the distribution of energy emissions across the
electromagnetic spectrum is described by
Planck's law. The total power emitted by radiation from a black body is given by the
Stefan–Boltzmann law.
Wien's displacement law predicts the wavelength of peak emission.
Incandescence occurs in
light bulbs, because the filament
resists the
flow of electrons. This resistance heats the filament to a temperature where part of the radiation falls in the visible spectrum. The majority of radiation, however, is emitted in the invisible infrared part of the spectrum, which is why incandescent light bulbs are inefficient.
Fluorescent lamps don't function by means of incandescence, rather by a combination of
thermionic emission and
atomic excitation due to collision with high energy electrons. In an incandescent lamp, only the electrons at the top of the band can participate. Higher temperature can increase efficiency but we don't have materials that can withstand much higher temperature.
Further Information
Get more info on 'Incandescent'.
|
External Link Exchanges
Do you know how hard it is to get a link from a large encyclopaedia? Well we're different and will prove it. To get a link from us just add the following HTML to your site on a relevant page:
<a href="http://incandescence.totallyexplained.com">Incandescence Totally Explained</a>
Then simply click through this link from your web page. Our crawlers will verify your link, extract the title of your web page and instantly add a link back to it. If you like you can remove the words Totally Explained and embed the link in article text.
As long as your link remains in place, we'll keep our link to you right here. Please play fair - our crawlers are watching. Your site must be closely related to this one's topic. Any kind of spamming, dubious practises or removing the link will result in your link from us being dropped and, potentially, your whole site being banned. |
