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Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
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drelog drelog
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8 years ago
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 would have to add a layer of some other material that would absorb the longer wavelengths of light.
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 make the filament thicker and add more current to make it glow brighter (for example, a 75w vs 40w bulb).
D) You couldn't do this; it isn't possible.
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Earth Science

Earth Science


Edition: 14th
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PulsaPulsa
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8 years ago
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drelog Author
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#2
8 years ago
Exactly what I needed, exam is tomorrow!
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