Hacker News Reader

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

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.

If that's the case, how is it possible that low energy photons absorbed by carbon nanotubes can generate high energy photons?