How many photons of visible

  1. How is it a substance can emit photons of visible light after absorbing ultra violet photons but not with infraredradiation The
    1. answers icon 0 answers
    2. Sue asked by Sue
    3. views icon 663 views
  2. true or falsean atom can emit photons in the visible portion of the electromagnetic spectrum after absorbing photons in the
    1. answers icon 1 answer
    2. joly asked by joly
    3. views icon 516 views
  3. In the process called fluorescence, some substances absorb photons of one kind of radiation (e.g) ultraviolet radiation), and
    1. answers icon 0 answers
    2. Kelvin asked by Kelvin
    3. views icon 1,125 views
  4. In the process of fluorescence, an atom ab-sorbs a photon of ultraviolet light and emits two or more photons of visible light.
    1. answers icon 1 answer
    2. Anonymous asked by Anonymous
    3. views icon 1,051 views
  5. A 75 W light source consumes 75 W of electric power. Typically only about 5% of this energy is emitted as visible light of
    1. answers icon 3 answers
    2. J asked by J
    3. views icon 772 views
  6. A 75 W light source consumes 75 W of electric power. Typically only about 5% of this energy is emitted as visible light of
    1. answers icon 2 answers
    2. A 75- light source consumes 75 of electrical power. Assume all this energy goes into emitted light asked by A 75- light source consumes 75 of electrical power. Assume all this energy goes into emitted light
    3. views icon 3,340 views
  7. How many photons of visible light result if a 60-keV x-ray photon is converted into green visible light with 10% efficiency?
    1. answers icon 0 answers
    2. Jordan asked by Jordan
    3. views icon 474 views
  8. If a 80 lightbulb emits 4.0 of the input energy as visible light (average wavelength 550 ) uniformly in all directions, estimate
    1. answers icon 4 answers
    2. sarah asked by sarah
    3. views icon 2,073 views
  9. At what light intensity (approximately) do sun and shade plants have similar rates of photosynthesis? (SC.912.N.1.1)* 1 point
    1. answers icon 1 answer
    2. somebody asked by somebody
    3. views icon 84 views
  10. At what light intensity (approximately) do sun and shade plants have similar rates of photosynthesis? (SC.912.N.1.1)* 1 point
    1. answers icon 1 answer
    2. somebody asked by somebody
    3. views icon 59 views