Home Experiments
Real physics with household materials. Every experiment lists safety notes, a full procedure, what to observe, and the explanation behind the result.
Bernoulli Ping-Pong Trick
Blow between two hanging ping-pong balls and watch them swing together — then levitate a ball in midair.
ExperimentFoil Boat Buoyancy Challenge
Build aluminum foil boats and load them with pennies — how many can your hull hold before it sinks?
ExperimentChladni Salt Patterns
Sprinkle salt on a vibrating tray and watch it draw the hidden geometry of standing waves.
ExperimentDIY Cloud Chamber
Build a cloud chamber with dry ice and see the vapor trails of real cosmic rays and natural radiation.
ExperimentConvection Currents in Water
Watch hot water rise and cold water sink in a glass — the engine behind weather, oceans, and radiators.
ExperimentSpinning Whistle Doppler Demo
Spin a whistle on a string and hear its pitch rise and fall — the Doppler effect you can feel in your hand.
ExperimentEgg Drop Engineering Challenge
Design a container that lets a raw egg survive a drop — and learn why crumple zones save lives.
ExperimentBuild an Electromagnet
Wrap wire around a nail, add a battery, and lift paperclips with a magnet you switch on and off.
ExperimentFriction Shoe Test
Drag different shoes across the floor with a rubber band scale and rank them by grip — then find what friction really depends on.
ExperimentIce Melting Race
Race identical ice cubes on metal versus wood — and feel why metal 'feels' colder at the same temperature.
ExperimentInvisible Ink Fluorescence
Write secret messages in tonic water and reveal them glowing under ultraviolet light.
ExperimentLemon Battery
Turn a lemon into a real battery with two metal strips — then chain them to light an LED.
ExperimentMeasure π by Rolling
Roll cans and lids, measure carefully, and rediscover π from your own data — plus a lesson in measurement error.
ExperimentPaper Bridge Strength Test
Fold paper into beams and bridges, then load them with coins to discover why shape beats material.
ExperimentPendulum Period Lab
Measure how a pendulum's period depends on length — and discover what it surprisingly does not depend on.
ExperimentShoebox Pinhole Camera
Turn a shoebox into a camera with no lens — and watch the world project itself upside down.
ExperimentRainbow Prism with Water
Catch sunlight through a glass of water and split it into a rainbow on your wall.
ExperimentPizza-Box Solar Oven
Build a pizza-box oven that cooks with pure sunlight — and melt chocolate to prove it works.
ExperimentStatic Balloon Tricks
Charge a balloon on your hair and use it to pick up paper, bend water, and stick to walls.
ExperimentString Telephone
Build the classic cup-and-string phone and find out why a taut string carries voices a slack one cannot.