Multiple Choice
The old fashioned incandescent light bulb produces yellowish colored light by heating tungsten to a very high temperature and the tungsten radiates light peaking in the yellowish- white range. If you wanted a more blue light that was brighter, what would you need to do with a simple filament light bulb?
A) You couldn't do this; it isn't possible.
B) You would have to add more electrical current to raise the filament to a higher temperature, which would make it burn out faster.
C) You would have to add a layer of some other material that would absorb the longer wavelengths of light.
D) You would have to make the filament thicker and add more current to make it glow brighter for example, a 75w vs 40w bulb..
Correct Answer:
Verified
Correct Answer:
Verified
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