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hkparker
National Hazard
Posts: 601
Registered: 15-10-2010
Location: California, United States
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Thank you Bot0nist.
As no one seems to want to type up the write up I will, hopefully tonight or so, and then go live. Expecting it to be up within 24 hours or so.
EDIT:
Also in the past we decided to donate all revenue to SM. I haven't done that yet because in this entire last year, that video has made $2.61. After
paypal fees I don't think that would help anyone much.
I still plan on donating everything from these videos to SM, but once we make enough for it to count. I will keep everyone posed of course.
[Edited on 24-9-2012 by hkparker]
My YouTube Channel
"Nothing is too wonderful to be true if it be consistent with the laws of nature." -Michael Faraday
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hkparker
National Hazard
Posts: 601
Registered: 15-10-2010
Location: California, United States
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My last post is too old to edit, so sorry for the double post.
Video is live: https://www.youtube.com/watch?v=bOxAYU7Ts9E
My YouTube Channel
"Nothing is too wonderful to be true if it be consistent with the laws of nature." -Michael Faraday
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triplepoint
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Location: U.S.
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well done. thank you. the text screens and narration give it a polished look.
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Eddygp
National Hazard
Posts: 858
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Location: University of York, UK
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incredible videos!
there may be bugs in gfind
[ˌɛdidʒiˈpiː] IPA pronunciation for my Username |
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Formatik
National Hazard
Posts: 927
Registered: 25-3-2008
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The final video looks great. Good work everyone.
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Morgan
International Hazard
Posts: 1705
Registered: 28-12-2010
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Quote: Originally posted by Morgan  | | Quote: Originally posted by Morgan | This is pretty left field but I wonder if a bombardier beetle could ignite a small vessel with CS2 vapor and air if you directed his abdomen toward
the said arrangement?
CS2 - Auto-ignition temperature: 90°C
Or would his chemical reaction go better in a pure oxygen atmosphere? Seems there must be something he could ignite with his chemical entourage.
http://sps.nus.edu.sg/~yanganqi/angel6.pdf
http://www.youtube.com/watch?v=3sHo8lokQlA&playnext=1&am...
I came across another tidbit of interest. The article is from Proceedings of the National Academy of Sciences.
"An early explorer, reporting on large bombardier beetles from the neotropics, commented that when these “play off their artillery” they are so
hot to the touch “that only few (can) be captured with the naked hand” (19).
http://www.pnas.org/content/96/17/9705.full
http://www.swedishbiomimetics.com/umist.htm
In all the old demonstration books they talk of nitrogen triiodide being sensitive enough to be set off by a fly, but it would be amusing to have a
demonstration of a beetle starting a fire I think.
I remember sparking a sealed 2 liter plasitc bottle filled with CS2 vapor and yellow sulfur plating out on the sides of the bottle. The bottle dd not
rupture, but briefly expanded ever so slightly. Maybe some of you more knowledgable out there have an idea of some substance that would ignite with
products of the beetle's spray. Not that I would want to inflame a beetle, but design it so you could segregate him from any harm.
And yes, I don't have any illusions of anyone really wanting to or going out and trying this, it's just a thought experiment. Although, if I did live
in the neotropics, it might be something to tinker with on a rainy day. It makes you wonder if nature could have, given enough time, invented some
creature that conjures fire, other than man. |
Ross Piper: Burnt by a bombardier beetle! - Wild Burma: Natures Lost
http://www.youtube.com/watch?v=UjfYpWerLQE |
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TheChemiKid
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What about peroxymonosulfuric acid and any flammable organic (Acetone, Ethanol, Methanol, Benzene, etc)
When the police come
\( * O * )/ ̿̿ ̿̿ ̿'̿'̵͇̿̿з=༼ ▀̿̿Ĺ̯̿̿▀̿ ̿ ༽
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Morgan
International Hazard
Posts: 1705
Registered: 28-12-2010
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Maybe you could stairstep the steamy heat from a bombardier beetle to activate a thin platinum wire or gauze, thus replacing the typical platinum
sponge affixed to platinum wire that early lighters used. According to this reference, the critical temperature for platinum wire to light O2/H2
mixtures is 50 C. (page 1092) I wonder what amount of heat would be required for air/H2 or something less bother like methanol and air?
Imagine having the beetle heat activate the platinum wire and by some mechanism quickly sequester or gate the bombardier so as not to damage the
"lighter" for repeated ignitions. If the spray didn't poison the catalyst, the chain of events could be an artistic albeit highly impractical
bombardier beetle ignition system. Recall this playful design.
"Dobereiner himself suggested that one could “embellish it
with two alchemical symbols, namely the lion
and the snake, and so arrange it that the snake
takes the place of the capillary tube for the
stream of hydrogen and the open jaws of the
lion sitting opposite the snake hold the
platinum.”
There were quite a few details in methodology in this chapter on combustion, with everything under the sun they could try to gain understanding, and
odd things too like the seemingly improbable accounts of tape measures and umbrellas spontaneously catching fire. (top of page 1094)
http://books.google.com/books?id=A-dYAAAAYAAJ&pg=PA1092&...
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AJKOER
Radically Dubious
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| Quote: Originally posted by hkparker | | .... I have mixed calcium hypochlorite and acetone and it doesnt react unless there is water in it to dissolve the ClO-, at least the reaction isnt
visible. I think Ca(ClO)2 will react with many things to start a fire, sulfur sounds worth a try. I think it would be great if you got involved
Mewrox99. |
I believe the underlying agent here is Cl2O (dichlorine oxide). The action of CO2 on moist Ca(ClO)2 is said to liberate Cl2O This gas will explode on
contact with turpentine,... My take on the reaction:
Ca(ClO)2 + H2CO3 --> CaCO3 (s) + 2 HOCl (see http://en.wikipedia.org/wiki/Cl2O)
2 HOCl = Cl2O + H2O
Another example is when water is added to TCCA forming HOCl. If the Hypochlorous acid is sufficiently concentrated, Cl2O is liberated which will
explode on contact with ammonia. So, dipping drops of aqueous ammonia on TCCA has been described as violent/explosive. Another possible explanation is
the formation of explosive vapors of Chloramine:
NH3 + HOCl = NH2Cl + H2O (see, for example, http://www.vl-pc.com/tasks/render/file/?fileid=0FFF2647-CE39... )
Similarly, as 2 HOCl = Cl2O + H2O
2 NH3 + Cl2O = 2 NH2Cl + H2O
However, the above reaction is speculative, a possible intermediate reaction, in an explosive scenario. A frequently cited version is, for example:
3 Cl2O + 10 NH3 --> 6 NH4Cl + 2 N2 + 3 H2O (see http://books.google.com/books?id=Fs4zQ-hNTz8C&pg=PA509&a... )
Interestingly and I find amusing, old write-ups on Chloramine correctly employ the adjective 'toxic' in its description. However, given its more
recent political endorsement as a water chlorination agent in certain jurisdictions, one may be more hard pressed to see this modifier. Case in point,
Wikipedia piece on NH2Cl does not contain the word toxic, but, in its defense, uses the term 'genotoxicity' (which relates to its ability to damage
DNA and lead to cancer) once for associated by-products when employing Chloramine.
-------------------------------------------------------------------------------
If trying to replicate this chain reaction ignition, note that oxygen is said to poison the reaction chain (so no explosion). In my opinion, the hard
part is actually filling the plastic bag with a heavy gas (Cl2) and a very light hard to contain gas (H2) without having any air present and avoiding
strong sunlight (uv light presents a premature detonation issue). The H2/Cl2 explosion displays significant kinetics (translation, powerful, so beware
and do not use a large vessel).
[Edited on 11-1-2014 by AJKOER]
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Morgan
International Hazard
Posts: 1705
Registered: 28-12-2010
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Döbereiner Lighter
https://www.youtube.com/watch?v=1V0rIo8c7qc
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Morgan
International Hazard
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A variation that saves the test tube.
Explosion vapor high molecular weight hydrocarbons
https://www.youtube.com/watch?v=lwozW1puNb0
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kecskesajt
Hazard to Others
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Registered: 7-12-2014
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I know the Q is old but here is another reaction using nitrating acid and turpentine: http://www.youtube.com/watch?v=8yFO2i5X1MU
Skip to 5:00
[Edited on 15-2-2015 by kecskesajt]
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Ragbips
Harmless
Posts: 6
Registered: 22-2-2011
Location: The Netherlands
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I have some old, kinda poor quality videos to share from when I was younger (and more reckless)
Water activated flash (silver nitrate + magnalium)
https://www.youtube.com/watch?v=-gbNxJ_GjIA
Fire by dumping sugary stuff in molten potassium perchlorate
https://www.youtube.com/watch?v=Of44gaRWRwk
Manganese heptoxide and acetone
https://www.youtube.com/watch?v=A22w0iw_O6g
"Lightning" by manganese heptoxide in IPA, should count as fire
https://www.youtube.com/watch?v=q3FuSVnGdSg
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