LOOK • TEST • DISCOVER
Illusions & Experiments
Things that fool your eyes, test simple ideas, or make you ask: why did that happen?
TRY ITVanishing Dot
Stare at the center and watch a nearby dot fade from view.
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TRY ITEqual Lines
Two identical lines look different because their arrow ends fool your brain.
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TRY ITBending Grid
Straight lines appear to bend when a repeating pattern pushes your perception around.
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TRY ITSize Switch
Two identical circles seem different in size depending on what surrounds them.
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TRY ITSpinning Rings
A still page can seem to shimmer and rotate when your eyes move across it.
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TRY ITAfterimage Flash
Stare at a colored shape, then shift your gaze and see its ghostly opposite.
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TRY ITPaper Helicopter
Cut and fold a tiny rotor, then test how blade size changes the fall.
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TRY ITBridge Strength
Compare a flat strip of paper with a folded one and see which holds more weight.
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TRY ITCoin Drop
Use a card and a coin to see inertia in action with one quick flick.
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TRY ITPaper Balance
Move paper weights around and discover how the center of mass changes stability.
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TRY ITStatic Paper
Charge a balloon or plastic object and make tiny paper pieces jump without touching them.
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TRY ITSound Cup
Turn a paper cup and string into a simple sound experiment about vibration.
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LEVEL UPPerspective Room
Use converging lines to make identical figures appear different in size.
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LEVEL UPCafe Wall
Straight horizontal lines appear tilted between staggered dark tiles.
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LEVEL UPMoire Motion
Slide one striped sheet over another to create moving wave patterns.
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LEVEL UPImpossible Triangle
A flat drawing looks like a solid object that could not exist in 3D.
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LEVEL UPColor Assimilation
The same gray can look warmer or cooler depending on nearby stripes.
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LEVEL UPSize Corridor
Equal shapes look different because your brain reads depth cues.
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LEVEL UPPendulum Period
Compare pendulums of different lengths and time their swings.
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LEVEL UPPaper Parachute
Test how canopy size changes the fall time of a paper parachute.
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LEVEL UPBeam Profile Test
Compare flat, folded, triangular and tube-like paper beams.
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LEVEL UPCenter of Gravity
Balance an irregular paper shape by finding its center of gravity.
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LEVEL UPRefraction Shift
Watch a printed arrow appear to reverse when viewed through water.
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LEVEL UPString Resonance
Change string length and tension to compare vibration and pitch.
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