Would a nuetrino laser cause any damage if aimed at a target and the nuetrinos had sufficiently high, ultra-relavisitic energy? Obviously, photons, and relativistic collimated beams of protons, electrons, etc. would do damage, but all such "lasers" interact with electromagnetism. They destroy a target because they interact electromagnetically with the atoms in a target. Nuetrinos do not interact electromagnetically, but they still have mass, and they interact with the Weak Force. Perhaps they wouldn't tear atoms apart, but they could possibly tear nuclei apart (weak force). Does anyone know of any calculation done that is "back of envelope" on how many nuetrinos and at what energy would be needed for them to be noticed, "felt" by a target or a human, without any special equipment? For lack of better analogy, if I got in the path of such a nuetrino laser, what would thier numbers be and how many would be needed for my skin to be vaporized, sun-tanned, cell damage, etc. I understand nuetrinos are incredibly almost massless and non-interacting, but I was curious about thier energies and numbers to "feel them" as I might "feel" a laser.