0 votes
2,112 views
I have seen white powder inside a tube light(fluorescent lamp) ..Whats their use ?
Category Engineering Forum in Electrical
asked Nov 22, 2015 in Electrical by peliant | 2,112 views

1 Answer

+1 vote
Best answer

The white powder is known as phosphor (phosphorescent) inside a fluorescent lamp, which is a substance that emits white, visible light whenever it absorbs light waves.

No, Phosphor powder is not harmful.....But this lights also contain small amount of mercury...If the glass tube is broken, then the mercury can contaminate the environment and this is not good for human eye.

Source:

http://en.wikipedia.org/wiki/Phosphor

 

 

answered Nov 23, 2015 by ntece
selected Nov 23, 2015 by peliant
Is that powder harmful ? Any reference article or document for your answer ?