Subject: | Re: [OM] no more carryons? |
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From: | andrew fildes <afildes@xxxxxxxxxxxxxx> |
Date: | Sat, 29 Sep 2001 10:18:23 +1000 |
>andrew fildes wrote: >> >> There's no relationship between gunpowder and TNT but lots of things will >> fool these kind of detectors. In one case the coating on playing cards is >> reputed to have caused a positive swab from a suspect's hands. >> AndrewF > >Actually there is. Both are based on nitrated organic molecules. TNT >is tri-nitro toluene and gunpowders (not black powder) use nitro >cellulose (and sometimes a bit of nitroglycerin) as the major ingrediant >with various inhibitors to make it a propellant instead of an >explosive. The bomb detector is tuned to detect nitrated compounds >which are not always explosive. > >Jerry Liles > I stand corrected - gunpowder to me always means black powder - even made my own as a rather dangerous teenager in the UK. I don't even remember the term 'black powder' being used as something distinct and different. AndrewF < This message was delivered via the Olympus Mailing List > < For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx > < Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html > |
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