MadSci Network: Physics
Query:

Re: How does the filament dimensions of a black light affect its working?

Date: Sun May 14 00:57:02 2000
Posted By: William Beaty, Electrical Engineer / Physics explainer / K-6 science textbook content provider
Area of science: Physics
ID: 957984240.Ph
Message:

Hi Andy! Does your UV bulb look like a normal screw-base incandescent bulb? Or is it a long fluorescent tube? Incandescent UV bulbs work just like any other incandescent bulb. The only difference is that the dyed glass acts as a filter which passes UV light but blocks most of the visible light. All incandescent bulbs put out some UV light along with visible and infrared light. If you are comparing the filament of this bulb with a normal incandescent bulb, make sure both bulbs have the same wattage rating.


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