SCIENCE TOPICS

Geopotential Height

In practice, most measurements of the atmosphere are made of pressure not elevation due to the variation in gravity at

Parabolic Free Surface

Imagine a still pond at the edge of a forest. Make it a beautiful autumn day because that’s a nice

Adventures in Your Kitchen Sink: Stream Thinning

Turn on your faucet. Go on, I’ll wait. Make sure you keep the speed of the water low enough that

What does “Frozen-In” Mean?

For highly conductive plasma (conductivity (σ) → ∞), we often say that the plasma is ‘frozen-in’ the magnetic field lines,

Parker Spirals

If the sun didn’t rotate, then the frozen-in magnetic field would be carried out radially with the solar wind (v

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Hapless Pigeon