Bad Beams? | How divergent are lasers?

Laser beams are amazing to watch since they appear like a string of light. Not like a wash of illumination from other light sources.
But does a laser beam spread out? Does it diverge - getting wider over distance? Let's measure the divergence of my cheapest and most expensive lasers!

LaserCube WiFi 2.5W and ND8 filter for it donated by https://www.wickedlasers.com
See the correction optics in the 2W version here:    • LaserCube 2.0 | They DOUBLED the power?  
Measuring power and wavelength of my strongest lasers, including the Laserglow Hercules:    • Strongest LASERs in my collection | P...  
Did you miss one of my videos?:    / brainiac75  

My Patreon-page:   / brainiac75  

FULL MUSIC CREDITS
Time codes: 0:01 + 0:33 + 9:44
"Fluidscape" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100393

Time codes: 0:17 + 11:05
"Darkness is Coming" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100584

Time codes: 0:42 + 10:08
"Lightless Dawn" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100655

Time codes: 2:34 + 7:15
"Perspectives" Kevin MacLeod (incompetech.com)
ISRC: USUAN1300027

Time code: 5:56
"Neo Western" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100615

All music above licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...

Time code: 9:18
Mix of two tracks:
1) The Shimmering by fran_ky (freesound.org/s/237363)
Licensed under Creative Commons 0 license
2) "Spacial Harvest" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
ISRC: USUAN1100653

#Divergence #Laser #Brainiac75