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Home Q & A Board Science-Related Homework Help Physics
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smithers123 smithers123
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11 years ago
The range of visible light is 400mm - 700nm .

What is this in joules?
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#1
11 years ago
Joules are a measurement of energy, not of length.  Are you sure that's what the question is asking?
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#2
11 years ago
The energy of a photon of a specific wavelength can be calculated by multiplying planck's constant times the speed of light divided by the wavelength. E=h*c/lambda

Taking care with units, you can calculate this such that E is in joules.
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