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A LITTLE SOMETHING WORTH KNOWING

A small discovery. Yours to pass on.

ScienceOne small ahaPhysics concept

This interaction makes a compass needle align with the Earth's magnetic field.

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Your new ahaMagnetism

Magnetism: Force produced by moving electric charge. Source: Magnetism ↗

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More from Physics in Plain Sight

A few more worth knowing.

  1. 23An imbalance of charge lets a rubbed balloon cling to a wall through this effect.RECALL
    Static Electricity

    Static electricity builds from an imbalance of charge on a surface, letting a rubbed balloon cling to a wall.

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  2. 24Driving a system near its natural frequency can greatly amplify vibration through this effect.RECALL
    Resonance

    Resonance amplifies vibration when an outside frequency matches an object's own natural rate, sometimes shattering glass.

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  3. 25This property of a liquid's surface helps water striders walk across it.RECALL
    Surface Tension

    Surface tension pulls a liquid's surface tight enough to let some insects walk across water.

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