Does laser beam expand along distance or not?
93178
Why does a laser beam diverge?
140996
Are there naturally occurring lasers?
119747
What is the meaning of the "expansion of space"?
40150
Will acceleration rate of expansion of space become faster than speed of light?
98608
Do (weaponized) lasers exist in the Star Wars universe?
103041
How is wavelength actually related to space (/distance)?
2191
Is there a maximum amount of photons that can exist in a certain amount of space?
12267
(Almost) double light speed
74101
How is a vacuum able to propagate light?
36482
How can laser interferometry be used to measure path difference smaller than wavelength of laser light?
28971
Do Photons Move in a Wave Like Pattern?
77511
Higher, greater or bigger distance?
21090
Using Nodes for Laser Line
89837
Speed of light when accelerating
114388
Why doesn't more light bounce off of things in the manner of sound?
57608
Approaching speed of light: why do objects appear further away in front of me?
117653
How does light travel?