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Tag: vectors

Physics, Secondary ed level, Tutorial

Why, exactly, do glass and liquids refract light?

We provide a semi-in-depth look into why glass and liquids bend light. We discuss quantum fields, Maxwell’s equations, and vectors. No calculations. Continue reading Why, exactly, do glass and liquids refract light?

KJ Runia2019-06-302022-10-21
Level 1 Undergraduate, Level 2 Undergraduate, Mathematics, Physics, Tutorial

Finding the normal force in planar non-uniform circular motion using polar coordinates

We find an expression for the normal force on a mass which is in planar non-uniform circular motion using polar coordinates. Continue reading Finding the normal force in planar non-uniform circular motion using polar coordinates

KJ Runia2019-06-282020-07-02
A computer-generated 3D image of a cup of coffee. The coffee, however, looks like a moderately turbulent sea. There's a tiny sailboat trying to avoid a lighthouse. All in this cup.
Physics, Secondary ed level, Tutorial

Why your coffee does not have tides

The moon orbits the earth and its gravity is causing the tides. But why don’t swimming pools have tides? Or a cup of coffee? Human bodies consist of water, mostly. Aren’t they tidally influenced by the moon? If you’re asking all these beautiful questions, then what you thought is causing the tides is probably wrong, and here’s why. Continue reading Why your coffee does not have tides

KJ Runia2019-03-022020-07-02

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