3 ms·
Coherence is not a necessary property of collimated (nondiverging) light (and doesn't cause it to "spread out"). You can produce noncoherent collimated light fr
by colanderman 3y ago
Coherence is not a necessary property of collimated (nondiverging) light (and doesn't cause it to "spread out"). You can produce noncoherent collimated light from any point source using e.g. a parabolic mirror.