The Irrational Mathematicians of Giza, Part 2

In Part 1 we dealt with numbers and ratios that were not unknown in the ancient world, even if we still think it was the Greeks that invented π and φ and the whole Pythagoras theorem etc.

Now we introduce ℯ (2.71828…), the base of the natural logarithm, which is defined as the limit of (1 + 1/n)n  as n approaches infinity. There is no evidence that the Egyptians knew of this number, but here it is:

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Natural faces

Nature sometimes plays interesting tricks. Perhaps you have heard of the face on Mars, or at least The Man in the Moon.

Back down on earth, there is a curious feature in Canada known as the Badlands Guardian, which, seen from far out in space, looks like an indigenous face:

Badlands Guardian

Well, not to be outdone, we down here in Sunny South Africa have our own version, also an indigenous face, seen from space:

Southern Africa indigenous face

If you’re having trouble spotting it, here’s a cut-out:

Face cut-out.

I guess we can dub this The Guardian of the Cape.

And yes, a little to the right of the neck in the bigger picture, is the mask from Scream ….