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02-18-2016, 02:40 AM #17
 Class 3B Laser Join Date: Jan 2014 Location: Near Mosul, Iraq Posts: 4,249 Rep Power: 2087
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Re: Exploding Beer Bottle!

Got picked up by a policeman when 12 years old when a buddy and I were shooting them at each other in a school yard, it was the weekend, no one around! Someone called them on us took all my bottle rockets away and drove us home where we got in a lot of trouble. He was doing as a favor, could have taken us to the police headquarters and charged us with something.

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Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
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Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

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02-18-2016, 04:48 AM #18
 Banned Join Date: Feb 2015 Posts: 1,375 Rep Power: 0
Isaac Clarke
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Re: Exploding Beer Bottle!

i have seen people face after coming in contact with acid before.... it was a horrible sight to look at.... like Freddy Kruger face cross with the map of Utar

02-18-2016, 05:10 AM #19
 Class 3B Laser Join Date: May 2013 Location: Snohomish County Washington, US Posts: 3,800 Rep Power: 1086
Pi R Squared
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Re: Exploding Beer Bottle!

It's amazing some of us live as long as we do.

A short time ago I found the top of the bottle with the cap still screwed on and a very sharp point on one side, it landed on a shelf well above the table, I didn't realize any glass had made it up there.

One of those people on YouTube that blow things up or microwave stuff should make a video and blow up some bottles of this stuff or several kinds of beer, maybe heat them over a fire or something. I wouldn't try it myself though.

Alan
__________________
Keychain 650nm <5mW
Quartet 4-in-1 630-680nm <1mW

AtlasNova 635nm <5mW
MillionAccessories 532nm <5mW broken
M462 462nm one of a kind (in progress)
PLTB450B 450nm 1913mW G2 lens
PL520 520nm 82mW acrylic lens
S06J 12X 405nm 590mW G2 lens
C6 M140 445nm 1.5W 3 element lens
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The light that shines twice as bright burns half as long.

02-18-2016, 06:55 AM #20
 Class 3R Laser Join Date: Jan 2015 Location: USA Posts: 1,244 Rep Power: 352
Laser Chick
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Re: Exploding Beer Bottle!

A friends cousin threw a beer bottle into a bonfire. The bottle shattered and a long shard pierced his chest and collapsed one of his lungs. Thank goodness someone at the party knew to seal it with a piece of plastic.
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520nm 15mW to 900mW
532nm 3mW to 1189mW
593.5nm 2mW
635nm 15mW to 200mW
650nm 5mW to 948mW

02-18-2016, 07:56 PM #21
 Super Moderator Join Date: Sep 2013 Location: Central California Coast Posts: 6,164 Rep Power: 1748
Hap
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Re: Exploding Beer Bottle!

Heheh.

This is Alan's face in the beginning:

This is his face after:

-Alex

02-19-2016, 12:00 AM #22
 Class 4 Laser Join Date: Aug 2007 Location: Netherlands Posts: 6,570 Rep Power: 1156
Benm
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Re: Exploding Beer Bottle!

You have to be careful with strong concentrated acids and alkali. Something like a car battery exploding close to your face could easily disfigure you for life, the acid in there is pretty concentrated and is especially dangerous for your eyes. Skin is actually somewhat resistant to it, as long as you wash it off REALLY quickly (i.e. jump into a pond or hose it off right then and there).

One trend here a few years ago was making bottles explode using a mixture of dissolved lye (NaOH) with bits of aluminium powder. This reaction is quite exothermic and generates a lot of hydrogen gas, creating enough pressure to make a capped soda bottle explode quite violently.

This is not very dangerous if done in a remote location and such, but kids were doing it on the street here, and in some cases people passing by got injured by the hot concentrated solution of lye flying around. Afaik they even stopped selling drain cleaner to minors for some time to prevent this.

02-19-2016, 06:51 AM #23
 Class 3R Laser Join Date: Apr 2015 Location: Fall river MA Posts: 1,452 Rep Power: 1255
GSS
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Re: Exploding Beer Bottle!

I've also had a car battery explode on me when giving a jump but luckely had my face looking the other way but I did get sprayed a little on my ear. I didn't hear an arc or sizzle just a bang but it was loud enough for me to lose a little hearing on one side for a few hours. Work any job long enough and you will get hurt wether a tiny bit or alot, could be complaisance or just the odds. I also heard of career say mechanics who get under a car with just a floor jack because it would only take a second on what they were to do and all it took was that second to end their lives. Of course i'm not the only one who knew someone. Look at the OSHA bulletin board in any machine shop where they show the dangers of long hair near a lathe or any type machine, yet people still wear it long. I,m guilty of slacking before and cringe of what I did as a kid but life is hard enough so I guess what i,m getting at is lets just really try to learn from mistakes. As we all know here that any laser related accidents no matter if it was product failure will be reported in an ER room.

Last edited by GSS; 02-19-2016 at 08:23 AM.

02-19-2016, 04:07 PM #24
 Class 3B Laser Join Date: May 2013 Location: Snohomish County Washington, US Posts: 3,800 Rep Power: 1086
Pi R Squared
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Re: Exploding Beer Bottle!

Well I decided to take a look on YouTube and yes I found some exploding beer bottles.

This one better shows the danger, I wouldn't want to clean up that kitchen:

Don't try this at home! And if you do then be sure to wear safety glasses and are at a safe distance. I honestly could have been blinded or killed had it not been for my iPad and LPF as I explained earlier.

Alan
__________________
Keychain 650nm <5mW
Quartet 4-in-1 630-680nm <1mW

AtlasNova 635nm <5mW
MillionAccessories 532nm <5mW broken
M462 462nm one of a kind (in progress)
PLTB450B 450nm 1913mW G2 lens
PL520 520nm 82mW acrylic lens
S06J 12X 405nm 590mW G2 lens
C6 M140 445nm 1.5W 3 element lens
9mm 445nm with G2 lens in a stainless steel host
Radiant Electronics X4 3.7W Laser Power Meter

___________________________________________
The light that shines twice as bright burns half as long.

02-19-2016, 04:52 PM #25
 Class 3R Laser Join Date: Apr 2015 Location: Fall river MA Posts: 1,452 Rep Power: 1255
GSS
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Re: Exploding Beer Bottle!

Pi, your having nightmares aren't you

02-19-2016, 05:27 PM #26
 Class 3B Laser Join Date: May 2013 Location: Snohomish County Washington, US Posts: 3,800 Rep Power: 1086
Pi R Squared
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Re: Exploding Beer Bottle!

Quote:
 Originally Posted by GSS Pi, your having nightmares aren't you
I have barely slept since it happened. The fact that a common item in your home can suddenly explode and possibly kill you or leave you disabled is as scary as nuclear war.

Alan
__________________
Keychain 650nm <5mW
Quartet 4-in-1 630-680nm <1mW

AtlasNova 635nm <5mW
MillionAccessories 532nm <5mW broken
M462 462nm one of a kind (in progress)
PLTB450B 450nm 1913mW G2 lens
PL520 520nm 82mW acrylic lens
S06J 12X 405nm 590mW G2 lens
C6 M140 445nm 1.5W 3 element lens
9mm 445nm with G2 lens in a stainless steel host
Radiant Electronics X4 3.7W Laser Power Meter

___________________________________________
The light that shines twice as bright burns half as long.

02-19-2016, 06:09 PM #27
 Class 3R Laser Join Date: Apr 2015 Location: Fall river MA Posts: 1,452 Rep Power: 1255
GSS
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Join Date: Apr 2015
Location: Fall river MA
Posts: 1,452
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Re: Exploding Beer Bottle!

Quote:
 Originally Posted by Pi R Squared I have barely slept since it happened. The fact that a common item in your home can suddenly explode and possibly kill you or leave you disabled is as scary as nuclear war. Alan
Ok, easier said then done but you just have to put it in the I learned something frame of mind. Does make you wonder why you picked up that ipad that split second. Like everyone here I have some very strange story's on "not being somewhere at the wrong time" and cringe when I think back. "Something" gave you a break and a warning, think about this thread and the warnings that you gave others and that might give you a good feeling and help you sleep. In time it will pass

Last edited by GSS; 02-19-2016 at 06:10 PM.

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