Focusing Gamma-rays
A discovery in 2012 may allow focusing gamma-ray telescopes. At photon energies greater than 700 keV, the index of refraction starts to increase again.
Read more about this topic: Gamma-ray Astronomy
Focusing Gamma-rays
A discovery in 2012 may allow focusing gamma-ray telescopes. At photon energies greater than 700 keV, the index of refraction starts to increase again.
Read more about this topic: Gamma-ray Astronomy