Questions with the keyword 'photons'

• Why do photons “prefer” to take the path (to the destination) which takes the least amount of time? by strangeness to Arttu, Ceri, James_M, Monica, Philip Comments: (So far, one comment )
• How can electrons absorb photons? Surely the electrons and photons are so tiny, and the amount of space between them by strangeness to Arttu, Ceri, James_M, Monica, Philip Comments: (So far, one comment )
• How do you know that photons have no rest mass? by stormwhite to James_M Comments: (No comments so far )