I read that helium balloons are hard to pop because helium carries heat away faster. Someone said that he was not able to pop a balloon with an RPL-165. If this is true, does anyone know how much optical power is needed to pop a helium-filled black balloon, assuming that the beam has a diameter of 1.4 mm?
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popping helium balloons?
- Thread starter ixfd64
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andy_con
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why do test and then let us all know 
Krutz
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no helium, black balloons nor powerful laser here to check, but i am sure its just urban legend. helium is quite different to plain air, but in terms of thermal dissipation and heat-transfer, both are really low pressure gases (at normal atmospheric pressure), and have no chance to dissipate heat at all, in a balloon+laser case. much more important would be the balloon, how "hard" inflated it is, color and so on. by the time the absorbed heat from the laser comes through the balloon-rubber to reach the gas inside, the outer surface is already melted.
my 2c anyway.
manuel
my 2c anyway.
manuel
Benm
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Hmm.. i'd think so too. Perhaps the water in a water balloon might make a decent coolant, but i think you'd still be able to pop one of those, right?
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ive had problems popping water balloons
it usually makes a small hole and the water leaks out
it usually makes a small hole and the water leaks out
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you should have no problems popping helium balloons, but as me_too_lazy said water balloons would be more difficult.
Krutz
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water balloons and difficult, yea! as a kid (pretending i am none any more hehe) i read about it, and tried it: couldnt pop a waterballoon with a lighter, not after minutes, or however long i tried that time!
try it, impress people with a bet that they will lose!
bringing a waterballoon to leak with a laser? must be pretty high power i guess! but then, how many mw does a lighterflame have..? temperature != power!
manuel
try it, impress people with a bet that they will lose!
bringing a waterballoon to leak with a laser? must be pretty high power i guess! but then, how many mw does a lighterflame have..? temperature != power!
manuel
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OK so like you know I have black baloons and He in my welding rig. So I filled a couple 5" black party baloons with Helium......
A focused red ---- Reght NOW.. A DL95 Green with 115 mW -- well , it took a second longer to pop at 3 feet.
I can't see how the gas could diffuse the heat simply because of its atomic mass in comparison to the wall of the balloon.
Busted ----
Mike
A focused red ---- Reght NOW.. A DL95 Green with 115 mW -- well , it took a second longer to pop at 3 feet.
I can't see how the gas could diffuse the heat simply because of its atomic mass in comparison to the wall of the balloon.
Busted ----
Mike
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Things --
Thanks for the notice. I didn't know I went over the mark !!!
1001 !!! Another round barkeep !!!
Mike
Thanks for the notice. I didn't know I went over the mark !!!
1001 !!! Another round barkeep !!!
Mike
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Yeah my diy red can make holes in water balloons but wont pop i put like 8 holes in it at once, they form almost instanlty but still no pop, so i end up grabbing it and throwing it lol, I like using real baloons and filling with water, alot bigger then a waterbaloon.
....lazer.... ;D ;D ;D
....lazer.... ;D ;D ;D
Benm
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I've just tried it, and water balloons seem very difficult indeed. I sharpied one and hit it with 100++ mW, to no avail. The laser ablates the ink just fine, but it will not make a hole all the way.
