Everywhere i look it says neutrinos are hard to detect as they dont interact electromagnetically, however neither do photons and photons have no mass so i dont't understand why we can detect photons so easily in comparison to neutrinos.

  • 4
    $\begingroup$ Why do you say photons don't interact electromagnetically? $\endgroup$ – GRB Oct 22 '17 at 22:35
  • $\begingroup$ Photons are the carriers of E&M interactions. $\endgroup$ – Lewis Miller Oct 22 '17 at 22:59
  • $\begingroup$ You will find the answer here. Duplicate: physics.stackexchange.com/q/133866/154997 $\endgroup$ – user154997 Oct 23 '17 at 7:55

neither do photons [interact electromagnetically]

It's true that photons don't interact (directly) with photons since photons are not electrically charged. But the electromagnetic interaction of electrically charged particles is via photons, i.e., two electrons interact (electromagnetically) via photons. We way that photons mediate the electromagnetic interaction.

Neutrinos, on the other hand, are not electrically charged and thus (in the Standard Model) do not interact or participate in electromagnetic interactions.


Neutrinos don't interact with matter very well and the reason for that is because they have no electrical charge and very very little mass. The only way a neutrino can interact with us is through the weak nuclear force since the gravitational interaction is virtually useless and they have no way to interact electromagnetically.


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