Every experiment, one place
Search Bruce's demonstrations by topic, age or keyword. Each one includes a build guide, the science, worksheets and a classroom lesson plan.
Sand Pendulum Art
Can a swinging bottle of sand draw a picture?
Hero's Fountain
How can a fountain run with no pump?
Marble Tracks & Loop-the-Loop
How high do you have to start to loop the loop?
Do-Nothing Machine
Why do the two sliders never crash?
Cup Flyers
Why does a spinning cup fly up instead of falling down?
Sound You Can See
What does your voice look like?
String Shooter
How can you make a loop of string fly?
High Road, Low Road Race
Can the long way be the fast way?
Tumbling Toy
How can a marble make a tube flip end over end?
Ramp Walkers
How can a cardboard toy walk with no motor?
Siphons
How can water climb up and out of a jar?
Come-Back Can
Why does this can roll back to you?
Balancing Toys
How can a butterfly balance on the tip of your finger?
Musical Bottles
Why does the same bottle sing high when you blow but low when you tap?
Falling Cones
Which falls faster: a big cone or a small one?
Upside-Down Water Glass
How can a paper card hold up a cup of water?
Solar Motor
Is this a free energy motor?
Toy Motor Speaker
Can a toy motor play music?
Pulley Power
Can a string and two wheels make you stronger?
Slow-Wave Loops
Why do waves crawl on a spinning rope?
Breaking Pole Paradox
How can you snap a stick that's resting on two cups of water without knocking them over?
Cartesian Divers
Why does a diver sink when you squeeze the bottle?
Balloon in a Bottle
Can you blow up a balloon inside a bottle?
Crushing Cans with Water
Can a tube of water crush a bottle?
Catching Eggs
Can you catch a raw egg without breaking it?
Echo Speed of Sound
How fast does sound travel?
No experiments match that yet.
200+ more demonstrations from Bruce's archive
Air pressure, light and optics, electricity, simple machines and more.