The one 8,529 Posted May 1, 2017 Report Share Posted May 1, 2017 I was watching a programme about arson and police forensic scientists how they work it out I was thinking about drilling a small hole in a light bulb a few syringes of petrol in there put it back in the light then when they switch it on boom my son reckons it wont work why no ? or would it ? Quote Link to post Share on other sites
king 11,984 Posted May 1, 2017 Report Share Posted May 1, 2017 I was watching a programme about arson and police forensic scientists how they work it out I was thinking about drilling a small hole in a light bulb a few syringes of petrol in there put it back in the light then when they switch it on boom my son reckons it wont work why no ? or would it ? I'm sure you need a naked flame to ignite the vapour so it shouldn't work.You can doubt fags in petrol.and the end is red hot. But it won't it ignite the petrol. 1 Quote Link to post Share on other sites
Tiercel 6,986 Posted May 1, 2017 Report Share Posted May 1, 2017 I was watching a programme about arson and police forensic scientists how they work it out I was thinking about drilling a small hole in a light bulb a few syringes of petrol in there put it back in the light then when they switch it on boom my son reckons it wont work why no ? or would it ? As daft thoughts go that is off the scale... I think the element needs a vacuum to work? I will stand to be corrected though. TC Quote Link to post Share on other sites
secretagentmole 1,701 Posted May 1, 2017 Report Share Posted May 1, 2017 I was watching a programme about arson and police forensic scientists how they work it out I was thinking about drilling a small hole in a light bulb a few syringes of petrol in there put it back in the light then when they switch it on boom my son reckons it wont work why no ? or would it ? Been watching "The Longest Yard" with Burt Reynolds in have we? 5 Quote Link to post Share on other sites
scothunter 12,609 Posted May 1, 2017 Report Share Posted May 1, 2017 Open up a shotgun cartridge instead of petrol Quote Link to post Share on other sites
secretagentmole 1,701 Posted May 1, 2017 Report Share Posted May 1, 2017 For all your information, all that is required is to heat the bulb till the petrol vapour explodes when exposed to a spark or flame. This happens at -43 C. Even in a light bulb that has been breached this will happen easily as long as the filament is intact, only got to get to red hot and it will ignite the vapour! Quote Link to post Share on other sites
sussex 5,802 Posted May 1, 2017 Report Share Posted May 1, 2017 I recon it would work , providing the petrol hadn't evaporated ( or someone needed it for there hands ) the vapours would surely ignite if the filament was red hot if only for a second till it burnt out ..give it a go and let us know .? Quote Link to post Share on other sites
C556 351 Posted May 1, 2017 Report Share Posted May 1, 2017 It should work as long as there's air/oxygen in the bulb. Quote Link to post Share on other sites
ChrisJones 7,975 Posted May 1, 2017 Report Share Posted May 1, 2017 Why not just stab them to death? That way you'll avoid the arson investigators completely. 8 Quote Link to post Share on other sites
socks 32,253 Posted May 1, 2017 Report Share Posted May 1, 2017 An old boy burned to death not long back because the static electricity in his fleece hoody ignited petrol fumes ....... Quote Link to post Share on other sites
Jonjon79 13,358 Posted May 1, 2017 Report Share Posted May 1, 2017 You're probably better off (or not ) pumping lighter fluid in there. If you're going to experiment with this, I recommend some open ground, a table lamp and a long extension lead ..... Trust me, I was a very curious kid 2 Quote Link to post Share on other sites
antg 1,787 Posted May 1, 2017 Report Share Posted May 1, 2017 MI5 is watching this thread now ya all fooked. doors kicked in. the lot. 1 Quote Link to post Share on other sites
ChrisJones 7,975 Posted May 1, 2017 Report Share Posted May 1, 2017 MI5 couldn't find their arse with both hands... Quote Link to post Share on other sites
antg 1,787 Posted May 1, 2017 Report Share Posted May 1, 2017 MI5 couldn't find their arse with both hands... ill not take ya word on that 1 Quote Link to post Share on other sites
king 11,984 Posted May 1, 2017 Report Share Posted May 1, 2017 For all your information, all that is required is to heat the bulb till the petrol vapour explodes when exposed to a spark or flame. This happens at -43 C. Even in a light bulb that has been breached this will happen easily as long as the filament is intact, only got to get to red hot and it will ignite the vapour! I don't think it will work.I've thrown lit fags after dragging feck out of them into neat petrol. They just go straight out.no ignition at all ever. Quote Link to post Share on other sites
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