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Evan

]]>But, thinking in this way, all trigonometric functions are dimensionful, in units of radius. Even the tangent, and here the paradox: on one side is sin/cos, so units should cancel. On other hand, it is the length of the tangent line, in the triangle composed by radius, secant and tangent lines, when the radius is the unit (hint: solve the paradox by recovering R, instead of the unit, in all the trigonometric formulae).

I am a bit puzzled and surprised by Isabel’s history, and the original research involved. I have always though that the goal in the meter was to be near of the yard.

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Evan

]]>It’s a nice counterpoint to the large majority of the people who commented when this was posted at reddit (which is where I’m guessing you stumbled in from, because that’s where something like thirteen thousand people stumbled in from) who claimed that I was some sort of crackpot because “of course g would be different if we used different units”. (I suspect many of them didn’t actually read the post.)

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