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The sun illuminating scratches on the window of a train produces an arc. Why?

Good Lord Pete! Did your parents know the sorts of things your grandparents talked to you about??? How old were you? (Whoops -- better not answer that!) 

 

"Gramoph..."

Ugh!

It reminds me of the passage in "The Flying Yorkshireman":

"You kept on, being wrapped deeper in the lonesomeness and barrenness of that place.  And when you got there, you didn't dare to talk.  All you did was stand by the Keep, whose stones were damp and green with their ancient age.  At least 1200 years old it was — that's what the schoolmaster said the day he went up there.  He talked about Saxon defenders and cromlechs.  That word cromlech, it made it worse, it did. "

sssss
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Last edited on: 2010-11-18 14:16:43

Tags: sun, sunlight, arc, geometricshapes, opticaleffect.

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