HeadRusch wrote:
nippythefish wrote:
brown_eyed1 wrote:
Whoa-ho-ho-man, I remember the following being banned: Pokemon stuff, of any kind; DBZ stuff, magazines, these things called 'Poppers' that the stupid kids in my class invented--they were these pieces of notebook paper folded a certain way so that when you flicked your wrist, they would make this explosive 'popping' noise, and it drove the teachers SO crazy, the banned it. How lame is that?

I guarantee the kids in your class didn't invent them....I remember having a kid's physics book where it showed how to make those, demonstrating breaking the sound barrier (which is what makes that noise).
Um..are you insane?

Breaking the Sound Barrier? Me Thinketh...Not

Yes, I'm insane. I'm not sure if I'm correct or not on the paper popper actually breaking the sound barrier, but I *know* the kids at your school didn't invent paper poppers/bangers.

wrote:
A banger is an origami model that makes a loud crack when snapped properly. The biggest banger ever made came from Paul Jackson, a college student doing a Performance Art project at the University of London in 1980.
http://www.everything2.com/index.pl?node=origami wrote:
The difference in electrical charge between the bottom of a thundercloud and the ground may be more than 305 volts per foot (1,000 V/m), so a lightning spark releasing that potential has a huge amount of energy. Some of this heats the air through which the lightning flashes and makes the air explode. The sudden expansion of air, followed by its rush back into the partial vacuum it has created, sends shock waves in all directions. It is those shock waves the sound of the explosion that we hear as THUNDER
http://www.mmem.spschools.org/grade3science/3.sound/banger.html wrote:
Sonic boom is an impulsive noise similar to thunder. It is caused by an object moving faster than sound, about 750 miles per hour at sea level.
http://www.sky-flash.com/boom.htm
And, being as I can't find whether or not the sound barrier needs to be broken to cause the air to smack into itself, this last link goes against the whole idea of a sound barrier and the person makes a rather interesting point:
http://www.zetatalk.com/science/s94.htm
Physics research is fun!

Oh, and this is for you, 80sfan
http://www.mathematische-basteleien.de/banger.htm