Find out one reason that buildings aren't equal in an earthquake.
If you vibrate something at just the right frequency, you can get a big reaction.
See your blind spot.
Catch a retinal net.
What happens when you blow a fuse?
A clueless way to determine the size of an object.
Create geometric art with soap films.
A soap film becomes an ever-changing work of art.
Use a lamp and a grease spot to estimate the power output of the sun.
Fingerprints for light sources.
Discover art and science in a myriad of spherical reflections.
Create graceful loops and spirals by drawing on a spinning dish.
Like a wheel within a wheel.
This visual illusion makes the palm of your hand appear to squirm and twist.
The attraction and repulsion of magnets produces entrancing, unpredictable motion.