3 ms·
In water photons travel at say 200,000km a second. Neutrinos travel at nearly 300,000km a second. That’s causes a blue glow. Which is how neutrino detectors wor
by hdgvhicv 1mo ago
In water photons travel at say 200,000km a second. Neutrinos travel at nearly 300,000km a second. That’s causes a blue glow. Which is how neutrino detectors work.
- chinathrow 1mo agoThanks - but I fell over this sentence: > but there are other particles that don’t slow down as much and end up moving faster than light. Not slowing down as much I can understand but shouldn't it read as "but there are other particles that don’t slow down as much OR EVEN end up moving faster than light."
- chinathrow 1mo agoEDIT: Got it, faster than light IN THAT MEDIUM.
- Betelbuddy 1mo agoYes ...it deserves to be flagged...This is the type of article we would never waste time with at the Vulcan Academy of Science. But you guys there at the Star Trek Academy, always had looser standards...
- pfdietz 1mo ago> In water photons travel at say 200,000km a second. It really depends on the energy of the photons. There is "dispersion". It's the same effect that causes a prism to split white light into different wavelengths.
- maxnoe 1mo agoNeutrinos are neutral particles, they do not carry an electromagnetic charge. They thus do not cause any Cherenkov light themselves. What Neutrino detector measure is the Cherenkov light emitted by secondary particles that are created when a Neutrino interacts with the matter inside the detector. E.g. a muon Neutrino reacts with a water molecule producing a muon, which is a charged particle and thus emits Cherenkov light.