Sunday, December 7, 2008

Sine Curve

Neither Pliny the Elder nor I will be buying any graph paper. We are in full accord over the Moon. Pliny's graph, which he has been plotting assiduously over the last twenty seven days, has turned into a heartbreakingly beautiful sine curve. It doesn't matter that Pliny's squares are rectangles, the sine curve is undeniable.

Now the Plinies have remembered their maths lessons from school. Not exactly, but sort of. And they agree that it makes sense that the moon appears to change more slowly the more or less of it you can see. They would also probably agree to the exact opposite if someone were to point out that the sine curve was telling them that. They don't fully get it, you see. But they love their beautiful sine curve, a remarkable phenomenon of nature.

Nostradamus, who knows about such things, told us weeks ago it would turn out to be a sine curve.

So the Moon Gadget is redeemed, or would be but for this. The Moon Gadget was set for the Northern Hemisphere, until last week, when I discovered how to set it to the Southern Hemisphere with a simple click. This reversed the bright side of the moon in my Moon Gadget so that it matched what I see in the sky. Nostradamus is currently in dispute with the Moon Gadget over this reversal. On an evening walk he demonstrated to me that no matter which hemisphere we were it the moon should look the same.

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