subtype, 5 months ago @icedquinn dunno about the rest, but Sagnac effect is something I've studied and it has nothing to do with mass, it's just that light sort of can't catch up if a fiber is spun with light inside it.
@icedquinn dunno about the rest, but Sagnac effect is something I've studied and it has nothing to do with mass, it's just that light sort of can't catch up if a fiber is spun with light inside it.