Very cool but surely VERY dangerous?
Could be done with a CO2 tube? Yes?
Stick yer mitt in the plamsa and have a hand with a hole in it
Senior Member
Very cool but surely VERY dangerous?
Could be done with a CO2 tube? Yes?
Stick yer mitt in the plamsa and have a hand with a hole in it
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When you do it with co2, you use a box of swirling carbon dust. Co2 does not do air breakdown unless you have KILOWATTS.Originally Posted by smogthemog
Very cool but surely VERY dangerous?
Could be done with a CO2 tube? Yes?
Stick yer mitt in the plamsa and have a hand with a hole in it
BTDTGTS.
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Looks like Bob Hess found the paper:
http://holography.ning.com/forum/top...ource=activity
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Seems like it would also be quite noisy..Very cool but surely VERY dangerous?
Could be done with a CO2 tube? Yes?
Stick yer mitt in the plamsa and have a hand with a hole in it
Senior Member
you can hear it in the youtube vid...
thats pretty fucking impressive. although, yes, i'd say pretty damn dangerous!
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The Full Monty
Oh yea.....Not just the Retina.....NOW the Full Monty via Audience Scanning.....NOT for the timid !!!
Just joking...hahaha....some idiot will do it.....and it will be on YouTube !! Oh NO.....I have given them another " Jack Ass" idea.....And we can call it...." Dancing with the Coherent Stars "
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Beam Axiom #3 ~Whe'n dout...Po ah Donk awn et !!
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Beam Axiom #4 ~A Chicken in every Pot, and a Laser Lumia in every Livingroom !!
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Beam Axiom #5 ~"Abstract Photonic Expressionism"....is "Abstractonimical" !!
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Beam Axiom #6 ~ "A Posse ad Essea" ~ From being possible to being actual ...is the beam target !
Hmmm... That's not too far off the mark, considering that the display creates free-air plasma (albeit for a very short period of time).And we can call it...." Dancing with the Coherent Stars "
As Aijii said above: this thing is damn dangerous! (but still very cool...)
Adam
Senior Member
So if you ran the laser at 30KHz (for 30Kpps scanning?) would the sound it emits also be 30KHz? That might make it virtually inaudible.
Considering that each little "snap" you hear is a tiny shockwave caused by the formation (and rapid expansion) of a very small ball of free-air plasma, the real question you should ask yourself is: if you had 30,000 tiny firecrackers going off every second, would you be able to hear the sound? (Answer: hell yes!)
Adam
Senior Member
Yeah I thought about that, too. But no matter how loud the noise is, if the frequency is 30kHz, you simply cannot hear it. I'm sure it's a little more complicated then a sine wave, but the pitch does seem to coincide with the laser repetition rate.
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