Laser COLOR limits data capacity?!?
What can a rainbow tell us about the limits of focusing a laser? Focusing a laser beam into a tiny spot is important in many technologies. In this video I will go through two examples: optical discs like CDs, DVDs and Blu-rays as well as laser engravers. Does the wavelength of the laser matter? Let's find out!
Thank you very much to Edwin En-Te Hwu and Anja Boisen for letting me use their illustration!
Link to their publication with even more, interesting info: https://pubs.acs.org/doi/10.1021/acss...
Edwin Hwu's channel: / edwinhwuhacks4science
Laser engraver Aufero Laser 1 and accessories donated by Ortur: https://www.aliexpress.com/item/10050...
Why does light bend? (Fermilab): • Why does light bend when it enters glass?
Why does light slow down (Fermilab): • Why does light slow down in water?
Calculate photon energy: https://www.omnicalculator.com/physic...
Calculate focus spot size: https://wavelength-oe.com/optical-cal...
Calculate depth of focus: https://wavelength-oe.com/optical-cal...
My Patreon-page: / brainiac75
Make your own laser beam dump: • Don't use strong lasers without this - eas...
My strongest laser, 5W laser vs. 5W LED: • Crazy difference between 5W LASER and 5W LED!
Did you miss one of my videos?: / brainiac75
FULL MUSIC CREDITS
Time code: 0:01
"Fluidscape" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100393
Time codes: 0:41 + 7:36 + 8:57
"Lightless Dawn" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100655
Time codes: 3:21 + 5:00
"Darkness is Coming" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100584
(Looped by me)
Time code: 4:19
"Impact Lento" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100619
Time code: 4:46
"Ossuary 6 - Air" by Kevin MacLeod (incompetech.com)
ISRC: USUAN1500048
Time code: 6:41
"Light Awash" Kevin MacLeod (incompetech.com)
ISRC: USUAN1100175
Time code: 9:29
"Adding the Sun" Kevin MacLeod (incompetech.com)
ISRC: USUAN1900041
All music above licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/b...
Time code: 8:28
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
#Laser #Rainbow #Brainiac75