|
article title rainbow -- get bright color from sunlight eye's blind spot -- what's in front of you that you don't see straws & string -- one way to make shapes big bounce -- boost the bounce needle through coin -- shape, size and hardness does it surface tension circle -- because water molecules pull glow tube -- light from static electricity leaf blower -- air holds up a ball push pull -- when pushing away pulls something nearer electro pendulum -- electricity swings a pendulum tv flashes -- a steady glow that's not steady needle compass -- a compass made from two needles ice boils water -- yep, it can happen sound lens -- a balloon makes a sound louder spool stunt -- rolling a spool can be interesting make coin visible -- seeing around a corner drawing board -- making lines in interesting patterns Bernoulli's law -- when faster moving air pushes less pass it along -- something held firmly moves anyway floaters -- stuff that floats inside your eye egg test -- hard boiled or raw test how many points -- the sense of touch can be fooled cube bubbles -- soap film on wire frames Magnus effect -- spinning changes the flight path of a cone butterfly -- a caterpillar changes to a butterfly life saver flash -- a flash is seen when the candy breaks edge then center -- where something floats in a glass of water right back -- light bounces back from where it came sound guide -- sound follows some paths more than others pinhole glasses -- a pinhole can be used to help you see start stop pendulum -- a pendulum that starts, stops and starts momentum transfer -- when marbles collide sticky balloon -- static electricity does it smoke rings -- how to make smoke rings grow crystals -- how to grow crystals stuck -- suction spherical oil drop -- an almost perfectly round drop of oil swing and roll -- like an out of balance clothes dryer global day/night -- understanding what causes day and night make a cloud -- a little cloud in a jar Cartesian diver -- it float and sinks in a bottle of water cantilever books -- a leaning stack of books rings in water -- like smoke rings in the air crystal sim -- what are crystals message -- seeing the magic |