tag:blogger.com,1999:blog-31189917.post4825998857181055099..comments2024-03-11T04:40:23.756-07:00Comments on The Blog of Phyz: Nothing's as cool as seeing the heatDean Bairdhttp://www.blogger.com/profile/17681829220589441713noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-31189917.post-28552525236552394032017-02-12T10:30:27.192-08:002017-02-12T10:30:27.192-08:00I have a couple of larger iron spheres (from a cem...I have a couple of larger iron spheres (from a cement foundry) that I use for this demo. They're about 4" in diameter. I usually show this demo with a student sitting at the front of the class, then after the class reaction (generally impressed, as you would be), I go around the class, giving everyone a souvenir hole in their notes.<br /><br />One year, as I was going around the class, one of the students shifted the angle of their paper slightly and I shifted the balls accordingly. Unfortunately, I caught the tip of my pinky between the balls because of the new angle, and suffered a rather nasty crush injury. I'll spare you the details. Suffice to say, I'm much more careful when I'm pounding these things together... Learn from my mistake and spare yourself a trip to the emergency room!Anonymousnoreply@blogger.com