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9/4/09
We watched a movie today: KABOOM!- Ground zero is a test range for the FBI to test high-powered explosives.
- Detenation of an explosive is the rapid rearrangement of atoms.
- Sidney Hawford - internationally known explosive engineer
- Things needed for an explosive: 1)means of ignition 2)fuel source 3) oxygen
- Roger Bacon - investigated gunpowder, made of saltpeter, sulphur, and charcoal; also found a wat to get better quality of saltpeter
- 1 million frames/second is required to catch the detenation of an explosive on film
- Alfred Nobel - invented the detenator; Nitroglycerin - extremely dangerous explosive used in dynamite; Dynamite - mixed nitroglycerin with inert absorbants; Blasting gel - same amount of explosiveness as nitroglycerin, but as safe as dynamite
this is a good video if you want to learn more about nitroglycerine.
ReplyDeletehttp://www.youtube.com/watch?v=n32G69luRFQ
ReplyDeletesorry forgot to post it
Low explosives just burn fast.
ReplyDeleteHigh exlosives actually explode.
http://www.youtube.com/watch?v=oa6fcun3kag
ReplyDeleteThis video shows multiple experiments demonstrating the explosive properties of nitroglycerin.
Here's a website with a pretty cool high speed filming of a car explosion. (Done for a test, of course.)
ReplyDeletehttp://www.break.com/index/car_explosion_with_high_speed_film.html
this is a great website that recaps the entire video
ReplyDeletehttp://mooni.fccj.org/~ethall/explode/explode.htm
in addition to dynamite, Nobel also invented the blasting cap to provide a safe and dependable means for detonating.
ReplyDeleteThis wasn't discussed in the video, but it's worth noting.
ReplyDeleteDynamite and TNT are different things, despite the common confusion of the two. TNT is a chemical compound discovered three years before the invention of dynamite, but it was too difficult to detonate to be appreciated at the time.
Just remember do not use the book's procedure on this lab
ReplyDelete