Although the photon at the surface and the neutrinos in the mine arrive at the same time, they have had very different histories. Someone suggests that astronomers build a special gamma-ray detector t...Although the photon at the surface and the neutrinos in the mine arrive at the same time, they have had very different histories. Someone suggests that astronomers build a special gamma-ray detector to detect gamma rays produced during the proton-proton chain in the core of the Sun, just like they built a neutrino detector. What is the mechanism that transfers heat from the fire to your face? (Hint: Is the air between you and the fire hotter or cooler than your face?)