Science

10 Fun, Amazing Physics Experiments 

analise.dubner
Updated August 30, 2017 49.9k views 10 items
The natural laws, things we take for granted on a daily basis, are things we haven't given much thought to. When we drop something, it falls. The end. We don't pull a Galileo and spend years dropping things of different masses and sizes to figure out why. But there are 10 quick and fun ways to SEE our natural laws in action, explained and de-mystified. Watch, and be amazed by how easily some of these simple experiments explain complex physics.
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Cymatics
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Typically, when the surface of a plate, diaphragm, or membrane is vibrated, the areas of displacement are made visible in a thin coating of particles, paste, or liquid. Different patterns emerge in the chosen medium depending on the geometry of the plate and the driving frequency. Different tones produce different patterns.
Lenz's Law
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What's Lenz's Law? Watch. It almost looks fake. The law states that an electromagnetic field interacting with a conductor will create electrical current that in turn creates a counter-magnetic field that opposes the magnetic field generating the current. If the magnetic field of one current induces another electric current, the currents will be in opposite directions. If these currents are in two circular conductors, then they must counter-rotate. The opposing currents will repel each other as a result.
Generating Electricity
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One of the simpler ways to generate electricity that can be directed and used, is a battery. An electric battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy. Each cell contains a positive terminal, or cathode, and a negative terminal, or anode. Electrolytes allow ions to move between the electrodes and terminals, which allows current to flow out of the battery to perform work. The Lemon Battery is an age old classroom experiment that demonstrates exactly how a battery converts stored energy.
Meissner Effect
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Levitation is real! Hovercars, here we come! So, what's the science here? In a weak applied field, a superconductor "expels" nearly all magnetic flux.

When superconducting materials reach their critical temperature two exciting things happen. The electrical resistance of the material drops rapidly to zero and then they become perfect diamagnets (they exclude all magnetic flux from the superconductor – the Meissner Effect).