See evidence of invisible cosmic rays with Cloud Chamber.
Skillets heat up differently: test their mettle.
Powder inside a fluorescent tube makes invisible light visible.
Magnets transfer energy back and forth, making the pendulum swing in unpredictable ways.
Power these appliances with your feet!
Sand traces a pendulum‘s motion.
Which wheel rolls downhill the fastest?
Linked pendulums can get one another going.
Wispy lines show the path of tiny, high-energy particles generated by cosmic rays.
Make a simple battery that will light an LED.
Build a rubber-band-powered rolling plastic water bottle.
Plunge into hydraulics with a pair of dueling syringes.
