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 Page 2 of 3. Messages 1 to 20 | 21 to 40 | 41 to 47
Author
Make Your Own Trangia

evanbb
10/09/2009
1:03:21 PM
On 10/09/2009 egosan wrote:
>She must have had some experience with Russian physicists in a laser lab.
>Such a
>scary willingness to give their lives for science. Berylium poisoning,
>Loss of sight or
>limb, Radiation sickness, all considered perfectly good ways to end ones
>career. Still
>none of that is scary as the dental work they all had.
>
>...shiver.

I want to know more about this.
egosan
10/09/2009
1:30:18 PM
http://en.wikipedia.org/wiki/Anatoli_Bugorski

http://www.democraticunderground.com/discuss/duboard.php?az=view_all&address=102x58284

Two examples from the news.

The scariest stories come from my sister who got her physics degree in a laboratory filled with these loons.

Desk Monkey
10/09/2009
1:49:46 PM
Oh that is nasty, especially:-

"The left half of Bugorski's face swelled up beyond recognition, and over the next several days started peeling off, showing the path that the proton beam (moving near the speed of light) had burned through parts of his face, his bone, and the brain tissue underneath"

So he had a hole through his head then.
Ouch.

mattjr
10/09/2009
2:08:02 PM
On 10/09/2009 egosan wrote:
>On 10/09/2009 mattjr wrote:
>>There's footage of home-made jobs similar to these exploding on Youtube.
>
>Link? Link?

Link..

http://www.youtube.com/watch?v=SekjzXDa52w&feature=fvw

the closing seconds of this clip show one exploding

dougal
10/09/2009
4:00:30 PM
On 10/09/2009 evanbb wrote:
>On 10/09/2009 wallwombat wrote:
>>On 10/09/2009 mattjr wrote:
>>>There's footage of home-made jobs similar to these exploding on Youtube.
>>
>>That's crap. Metho does not explode. I know.
>
I gave myself a bad haircut once with non exploding metho. Filled a hot stove and it exploded.
drdeviousii
11/09/2009
10:11:42 AM

>>>That's crap. Metho does not explode. I know.
>>
>I gave myself a bad haircut once with non exploding metho. Filled a hot
>stove and it exploded.

metho generally does not explode but as you found out the vapours are rather flammable & can flare up. filling any hot stove be it trangia or home-made trangia equivalent would do the same. If you want a safe stove you need to find some non-flammable fuel or get some common sense.

ajfclark
11/09/2009
10:34:43 AM
On 11/09/2009 drdeviousii wrote:
>metho generally does not explode but as you found out the vapours are rather flammable & can flare up.

From the MSDS:

Fire/Explosion Hazard: High hazard.

Burns with a colourless flame. Vapour will form explosive mixtures with air. Vapour is heavier than air and may spread at ground level, hence ignition from remote sources possible. Use water to cool containers exposed to fire. Containers previously holding ethanol products must be de-gassed before entry or subjected to sources of ignition. Do not use compressed air for filling, discharging, mixing or handling product due to potential vapour hazard. All vessels must be earthed to avoid generation of static electricity charges when agitating or transferring the solvent.

Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or an alcohol stable foam.

ambyeok
11/09/2009
10:35:53 AM
On 11/09/2009 drdeviousii wrote:
>metho generally does not explode but as you found out the vapours are
>rather flammable & can flare up. filling any hot stove be it trangia or
>home-made trangia equivalent would do the same. If you want a safe stove
>you need to find some non-flammable fuel or get some common sense.

I believe there are numerous options to produce heat without flames, ranging from anthracite coal to hydrogen fusion; however, I am cautiously suspect these may not be totally safe either.

evanbb
11/09/2009
10:57:50 AM
On 11/09/2009 ambyeok wrote:
>I believe there are numerous options to produce heat without flames, ranging
>from anthracite coal to hydrogen fusion; however, I am cautiously suspect
>these may not be totally safe either.

'Without flames' in the H2 fusion case, is replaced by a plasma. Which you will find to be more damaging than weak ole meths.

Desk Monkey
11/09/2009
11:00:47 AM
On 11/09/2009 ambyeok wrote:
>I believe there are numerous options to produce heat without flames, ranging
>from anthracite coal to hydrogen fusion; however, I am cautiously suspect
>these may not be totally safe either.

I'll be waiting for the next MSR XGK with a jet for deuterium then
egosan
11/09/2009
11:16:54 AM
Here is a pic of my new stove:

http://zpinch.sandia.gov/Z/Images/z.jpg

Boils 1L of water in ~4e-9 seconds. In the 5th nanosecond the water becomes an ionized
plasma that isn't much good for tea anymore. So you have to be quick.

ambyeok
11/09/2009
11:46:16 AM
On 11/09/2009 egosan wrote:
>Boils 1L of water in ~4e-9 seconds. In the 5th nanosecond the water becomes
>an ionized
>plasma that isn't much good for tea anymore. So you have to be quick.

Nice stove, unfortunately most of the crag also becomes ionised plasma at about the same time so you wont get much climbing in.

evanbb
11/09/2009
12:00:43 PM
Wow, this thread's getting nerdier by the second. Good stuff.
egosan
11/09/2009
12:02:38 PM
On 11/09/2009 ambyeok wrote:
>Nice stove, unfortunately most of the crag also becomes ionised plasma
>at about the same time so you wont get much climbing in.

Nah, though the power output is pretty high, 50e12 Watts, the stove is only on for a
handful of nanoseconds. The total heat and light released only adds up to only a couple
100KJ. Enough to boil the water turn a lot of it to plasma, however not enough to make a
crater. It will make a very bright light and pretty loud bang as well.
widewetandslippery
11/09/2009
12:13:05 PM
So would this stove make enough heat to:
(a) blow up an aerosol can?
(b) blow up a gaz canister?

egosan
11/09/2009
12:26:11 PM
If you are dead set on trimming your eyebrows the hard way you don't need the fancy
stove. An aerosol can, a hammer and a lighter will do the trick. There is such a thing as
over engineering the problem.
widewetandslippery
11/09/2009
12:31:57 PM
egosan.

picture this.

you're all around the campfire and brainiac goes for a pee in the distance. lites up his fosters stove. places gaz canister on top. in the dim light from the metho stove sheltered by the beer can wind shield no one sees anything.


a few beers latter. boom, holy moses a fireball.

just thinking

wallwombat
11/09/2009
12:48:30 PM
On 11/09/2009 widewetandslippery wrote:

>picture this.
>
>you're all around the campfire and brainiac goes for a pee in the distance.
>lites up his fosters stove. places gaz canister on top. in the dim light
>from the metho stove sheltered by the beer can wind shield no one sees
>anything.

>just thinking

We're buying stubbies from now on, Dude.
egosan
11/09/2009
12:58:19 PM
Fire balls are definitely good for impressing the girls, however I for one would never
condone that sort of behavior. Still I might be intrigued enough to test a prototype. Does
anyone know at what temperature a propane canister fails catastrophically?
widewetandslippery
11/09/2009
1:03:15 PM
On 11/09/2009 egosan wrote:
Does
>anyone know at what temperature a propane canister fails catastrophically?

Thats poetry.


 Page 2 of 3. Messages 1 to 20 | 21 to 40 | 41 to 47
There are 47 messages in this topic.

 

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