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ArcticMyst Security by Avery

Some quick new videos, including 445nm laser "pushing" aluminum foil

Joined
Jul 9, 2015
Messages
248
Points
43
I recorded a couple of new videos today, but the first one here I stumbled on something by accident. This first video shows my 2+W PL445 "pushing" aluminum foil. I was excited to see this phenomenon and came across it by accident as I was only using the aluminum foil as just a surface cover. When I scanned the laser across the surface of the foil I noticed it made crinkling noises like it was being pushed and then I noticed you can actually see the laser "pushing" on the surface of the foil and actually moving the foil around and you can even hear it on the video.

https://www.youtube.com/watch?v=Px2YUWCBWYY


Second video I made was me striking an icecube wrapped in electrical tape with the PL445 and noticing that besides producing a lot of smoke and fairly audible hissing and popping sounds, it also would spit some sparks at the lasing point as well. The sparks are not very visible at all on the video but it was actually a pretty interesting experiment anyway with all the burning noises and smoke. The ice kept the tape from staying on fire and allowed for some more dramatic burning effects.

https://www.youtube.com/watch?v=8gJqlncjOrY

Well, hope you all like the videos, I will have to experiment more with the aluminum foil when I get time. I really was excited watching the laser "push" the foil around, I never have seen that phenomenon before so I thought it was cool at least. :eg:
 
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Joined
Jun 7, 2012
Messages
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The aluminum video was pretty neat but I don't believe the laser is actually "pushing" the foil. I would guess temperature changes in the foil are causing the displacements. If these lasers could generate that level of force a Crookes radiometer would spin in a strong vacuum but they don't.

https://en.wikipedia.org/wiki/Crookes_radiometer
 
Joined
Jul 9, 2015
Messages
248
Points
43
The aluminum video was pretty neat but I don't believe the laser is actually "pushing" the foil. I would guess temperature changes in the foil are causing the displacements. If these lasers could generate that level of force a Crookes radiometer would spin in a strong vacuum but they don't.

https://en.wikipedia.org/wiki/Crookes_radiometer


Yes, I never thought it was actually pushing the foil, that is why I put quotes around the "pushing". :) I figured it was fast thermal changes doing it as well. The radiometer example was actually what I was imagining also. But no, I wasn't trying to demonstrate the laser actually having a physical force. :D
 





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