News for hackers. Stuff that matters.

A comment on Rice University researchers propose a way to boost solar efficiency. Parent comment

Re:Rice University researchers propose a way to boost solar ... by p1esk on Friday August 09, 2019 @05:58PM (#20658540)
I see, thanks! Why are visible light photons "stronger" than infrared photons?
[ Parent | on HN ]
Re:Rice University researchers propose a way to boost solar ... by fengazer on Friday August 09, 2019 @06:38PM (#20658773)
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.

[ Parent | on HN ]
Re:Rice University researchers propose a way to boost solar ... by p1esk on Friday August 09, 2019 @06:56PM (#20658874)
If that's the case, how is it possible that low energy photons absorbed by carbon nanotubes can generate high energy photons?
[ Parent | on HN ]
Re:Rice University researchers propose a way to boost solar ... by skosch on Friday August 09, 2019 @10:11PM (#20659733)
Because it's not a one-to-one conversion. See e.g. https://en.wikipedia.org/wiki/Second-harmonic_generation
[ Parent | on HN ]