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Energy
Cloud Chamber
Look down into the chamber and you’ll see an ongoing cascade of thin white trails appearing and disappearing. These are cosmic ray tracks, created by high-energy subatomic particles from space.
Coupled Pendulums
Start one of these two pendulums swinging and soon you’ll see the other pendulum start swinging, too. Keep watching and you’ll see the two pendulums take turns, alternately swinging energetically and coming to a near standstill.
Where: Crossroads: Getting Started
Downhill Race
Believe it or not, when objects roll downhill, it’s not their weight or size that determines their speed—it’s how their weight is distributed.
Where: Crossroads: Getting Started
Fluorescent Tube
Powder inside a fluorescent tube makes invisible light visible.
Skillets
Skillets heat up differently: test their mettle.
Strange Attractor
Magnets in the pendulum and the disks transfer energy back and forth, making the pendulum swing in unpredictable ways.
Where: Crossroads: Getting Started
