An electrodeless lamp or induction light is a light source in which the power required to generate light is transferred from outside the lamp envelope to inside via electromagnetic fields, in contrast with a typical electrical lamp that uses electrical connections through the lamp envelope to transfer power. There are three advantages of eliminating electrodes:
- Extended lamp life, because the electrodes are usually the limiting factor in lamp life.
- The ability to use light-generating substances of higher efficiency that would react with metal electrodes in normal lamps.
- Improved collection efficiency because the source can be made very small without shortening life, a problem in electroded lamps
Two systems are described below – one, plasma lamps, based on the use of radio waves energizing a bulb filled with sulfur or metal halides, the other, fluorescent induction lamps, based upon conventional fluorescent lamp phosphors.
Read more about Electrodeless Lamp: History, Plasma Lamps, Magnetic Induction Lamps
Famous quotes containing the word lamp:
“How can they know
Truth flourishes where the student’s lamp has shone,
And there alone, that have no solitude?
So the crowd come they care not what may come.
They have loud music, hope every day renewed
And heartier loves; that lamp is from the tomb.”
—William Butler Yeats (1865–1939)