I had the craziest high school physics teacher EVER! His room was littered with teetery wooden shelves from from strapping, each one packed to the brim with old electronics, like TVs, large banks of 8" tall capacitors, broken oscilloscopes, compouters, random wires everywhere. In a demonstration of force and pressure, he would hit a TV with the large end of a hammer, and we’d see that it dented and cracked the glass, then he hit it with the claw end and we watched as it broke through the glass and heard the large “POP” from the vacuum in the tube. He would place two large drywall screws into a pickle, take the stripped end of an old lamp plug and wrap the wires around the screws. He then plugged it into the wall and the pickle lit up. No fuses, no insulation around the screws. Oh, and the pickle was on the table about a foot from us.
The highlight of the year was always the “physics war.” We got into teams of 2-4, each team built a cannon out of wood and a length of PVC pipe, and cut slits in the side of the pipe and made a plunger type of thing in the pipe so it could hold and shoot out a tennis ball. The plunger was attached to lengths of surgical tubing. We all test fired our guns on the track to see who could launch the tennis balls the furthest (prior to this, we all did “calibration” of our guns by launching them at intervals of 5 degrees and marking the distance. IT was all part of learning about trajectory and all that jazz.) Whoever got the furthest got first pick of what country the wanted to be for the “war” the next day. Each country got a certain prize with it. America, being so rich and having a powerful military, got a few pizzas for the team and lots of tennis balls. Columbia got lots of “coke” (heh), France got a shit ton of tennis balls, since they have lots of Nukes, etc…The teams that sucked got the countries without a lot of money and supplies. Then, the next day, we all went to the soccer field, and SHOT TENNIS BALLS AT EACH OTHER. These things must have been going over 100 MPH, easily. We all took balls to the chest, arms, face, etc…The only safety requirements were a helmet and safety goggles. We even used “chemical weapons” by dropping some balls into paint. We had coffee cans labels with what supplies we had, and if you hit someone’s cans, you got their supplies when the war was over (lunchtime, so as best to maximize the pizza.)
I went to high school during the height of the high school shootings (Columbine was at the end of my junior yeah, the “war” was in the fall.) We still shot tennis balls at each other, though I hear they did eventually switch to not aiming at people, and only the cans, then they went to shooting jello instead of tennis balls (didn’t work, the jello just broke up in the air,) and I think it’s gone now.