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mechanics

The Log File

Dirk Harms-Merbitz

What survives in DNA is not what was chosen. It is what was not eliminated. Two channels, two timescales, one filter that has been running for hundreds of millions of years.

Einstein’s mass-energy and kinetic energy

Andrew James Steinmetz

It’s easy to notice that the famous equation \(E = mc^2\) is similar to the classical expression for kinetic energy \(T = \frac{1}{2}mv^2\). Both are proportional to mass, and both have a “speed” (\(c\) or \(v\)) which is squared. That they are alike might prompt the question: why doesn’t...