3 ms·

I see, thanks! Why are visible light photons "stronger" than infrared photons?

• fengazer 7y ago
  Visible light photons have more energy each. The shorter the wavelength, the higher the energy of the photon. Light with a short enough wavelength (UV-B, for example) has enough energy to damage the DNA in our skin and increase our risk of skin cancer.
  • p1esk 7y ago
    If that's the case, how is it possible that low energy photons absorbed by carbon nanotubes can generate high energy photons?
    • skosch 7y ago
      Because it's not a one-to-one conversion. See e.g. https://en.wikipedia.org/wiki/Second-harmonic_generation https://en.wikipedia.org/wiki/Second-harmonic_generation