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Returning after half a decade.

photonaholic

Well-known member
Joined
Oct 24, 2009
Messages
2,800
Points
63
If my not visiting the forum for 5 years has offended or angered anyone, I apologize. Hopefully there is some serious tech talk to be found...... Up front, I'm just too old to be interested in how many balloons a pointer can pop or how many matches one can light.. The physics and electronics are more my interest. That being said.... Hope everyone reading this is doing fine and happily lasing safely. :)
 

CurtisOliver

Well-known member
LPF Site Supporter
Joined
Jun 12, 2015
Messages
6,234
Points
113
Welcome back. photonaholic.
There are plenty of individuals here capable of talking about more than popping balloons and lighting matches so you'll be fine. ;)
 

RA_pierce

Well-known member
Joined
Sep 16, 2007
Messages
3,411
Points
83
If my not visiting the forum for 5 years has offended or angered anyone, I apologize.
I am both offended and enraged!
Welcome back. I don't remember you but your signature rings a bell.

You will find that balloon-popping and match-lighting has gone out of style. We've moved on to searing our remaining good eye with some really serious equipment.
And there is still some science talk to be found.
I'll see you around...
 

Pelagius

Active member
Joined
Jul 1, 2018
Messages
285
Points
28
I'd welcome you back-but that would be presumptuous of me after 3 months. I do like the science of how lasers work and their uses.
I imagine there are numerous new diode and DPSS lasers around in the last 5 years. I'm looking forward to a portable 577 nm at some point.

I've yet to pop a balloon-or cut electrical tape-but I did light some matches-and have been writing on scraps of wood.
RA_pierce: :) "We've moved on to searing our remaining good eye with some really serious equipment."
 

photonaholic

Well-known member
Joined
Oct 24, 2009
Messages
2,800
Points
63
I promise not to explode any brains with such things as "are photons a particle, or an EM wave"? or "How can a particle have charge and spin but no mass"? :p ....... Watch the video... They use lasers to demonstrate how we detected gravitational waves...
 

CurtisOliver

Well-known member
LPF Site Supporter
Joined
Jun 12, 2015
Messages
6,234
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Particle-wave duality is cool. I quite like QM myself. :)
 

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
14,363
Points
113
Nice shout out for the LIGO observatory. We have one here in Washington state in Richmond. It was very interesting that the gravitational waves were confirmed two years ago. I have had occasions to make Michelson interferometers when testing the stability of optical tables for making holograms.
 




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