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How many photons of visible

How is it a substance can emit photons of visible light after absorbing ultra violet photons but not with infraredradiation The
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2. asked by Sue
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true or falsean atom can emit photons in the visible portion of the electromagnetic spectrum after absorbing photons in the
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2. asked by joly
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In the process called fluorescence, some substances absorb photons of one kind of radiation (e.g) ultraviolet radiation), and
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2. asked by Kelvin
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In the process of fluorescence, an atom ab-sorbs a photon of ultraviolet light and emits two or more photons of visible light.
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2. asked by Anonymous
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A 75 W light source consumes 75 W of electric power. Typically only about 5% of this energy is emitted as visible light of
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2. asked by J
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A 75 W light source consumes 75 W of electric power. Typically only about 5% of this energy is emitted as visible light of
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2. asked by A 75- light source consumes 75 of electrical power. Assume all this energy goes into emitted light
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How many photons of visible light result if a 60-keV x-ray photon is converted into green visible light with 10% efficiency?
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2. asked by Jordan
3. 494 views
If a 80 lightbulb emits 4.0 of the input energy as visible light (average wavelength 550 ) uniformly in all directions, estimate
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2. asked by sarah
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At what light intensity (approximately) do sun and shade plants have similar rates of photosynthesis? (SC.912.N.1.1)* 1 point
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2. asked by somebody
3. 102 views
At what light intensity (approximately) do sun and shade plants have similar rates of photosynthesis? (SC.912.N.1.1)* 1 point
1. 1 answer
2. asked by somebody
3. 74 views