This clip of Richard Feynman discussing inertia is notable for two reasons. First, he explains inertia in a wonderfully clear manner. But, even better to me, is the way his father answered his questions. It made the young Richard run back to his wagon to observe for himself what his father had said. This is [...]
Making science fun for your young scientist is always a bonus! This is a quick and easy-to-make project that will make their eyes go wide. All you need is a plastic cup, a button of any size, and some waxed dental floss. Step one is to pull off about three feet of floss and cut [...]
Ever wonder how magnets are made? This is an excellent clip of how they do it. How-to videos are valuable for showing us that a lot of thought, imagination, and science skills have to be used together to bring us all the things we have today. I love watching things like this!
This is a good project to try in the winter when the air is dry. It’s another way to use static electricity to make light flash in your hands. Simple to do, all you need is a compact fluorescent lamp (CFL) and a comb. No need to screw the lamp into a light socket, you [...]
This is an amazing video created from individual still photos taken by the Cassini spacecraft on its journey to explore Saturn and its moons. If you’re able, click the lower right corner of the video to watch it in full-screen HD. You can read more about the Cassini mission here and more about the making [...]
No, there aren’t any ghosts! But this does look kind of spooky. Would you like to see things when it’s totally dark? This strange trick for your eyes only lasts a few moments, but it’s fun to do. Try it by yourself or with a brother or sister (or even Mom or Dad!) It’s a [...]
There’s an old gag that challenges someone to fold a dollar bill in half eight times. If they can do it, they get to keep it. The trick is that it gets so thick, so fast, that six folds are usually the limit. You can try it yourself with a dollar bill, a sheet of [...]
It’s always interesting to see things from different points of… time. Things that normally happen slowly can reveal surprises when sped up. We usually think of a cloud as a big fluffy white thing that floats along as a more-or-less “solid” object. Here we can see that they really appear and disappear, forming and vanishing [...]
The sound we hear interacts with itself to form patterns we usually can’t see. Salt on a metal plate, and attached to a speaker, shows these patterns clearly.
It’s always cool when things that happen quickly are slowed down. Each kernel of popcorn has a little water in it. Enough heat turns the water to steam, which bursts the shell and turns the whole thing inside out.