why we always constructed observatory under a moutain or deep underneath the ground.. For example the newly The Super-Kamiokande neutrino detector is a physics experiment the size of a 15-story building, buried under a mountain in Japan

Question

Curious

In: Physics

Answer 1

Neutrinos are one of the very smallest particles, and have no charge. They don’t interact with things very often, it’s not unreasonable for a neutrino to pass through the entire earth without colliding with anything.

The equipment has to be extremely sensitive to detect anything, so terrestrial radiation, electric fields from power lines, all kinds of things can interfere with it. Underground the equipment is isolated from those interferences but still just as likely to catch a neutrino