What one of theses lights are different ?

Asked by Siblinings (136

) February 21st, 2010

http://i170.photobucket.com/albums/u276/saenbateman/light.jpg
The photo has been taken through a diffraction grating.
B and C are street lights and A is a flood light.

Looking at the spectra B and C are similar. What is the difference in the spectra produced by the two types of light?

I don’t get the question of ” What is the difference in the spectra produced by the two types of light?”
They both have the same colours, how are they different?

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6 Answers

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I’ll give you a clue: the spectra and lines in these spectra can tell you what chemicals are used in the lamps. Now go do your research.

stranger_in_a_strange_land (18360

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the bottom one?

asawilliams (368

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the street lights are generally made from sodium so they do not give off light pollution

asawilliams (368

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is one high pressure and the other one low pressure?

asawilliams (368

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They don’t have the same colours. Look again, more carefully. Remember that different colours refract different amounts, depending on wavelength. Which colours are further apart?

FireMadeFlesh (16603

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