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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaPhysics concept

Driving a system near its natural frequency can greatly amplify vibration through this effect.

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Your new ahaResonance

Resonance — everyday example: A wine glass shattering from a high-pitched sound. Source: Resonance ↗

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  1. 25This property of a liquid's surface helps water striders walk across it.RECALL
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    Surface tension pulls a liquid's surface tight enough to let some insects walk across water.

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  2. 26A changing magnetic field generates an electromotive force through this process used in dynamos.RECALL
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    Electromagnetic induction, discovered by Michael Faraday, generates current from a changing magnetic field, as in a bicycle dynamo.

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  3. 27Particles spread from higher to lower concentration through this process.RECALL
    Diffusion

    Diffusion spreads particles from areas of high to low concentration, coloring a whole glass of water from one drop.

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