I don't know the answer to your question, but
I'm impressed with your experimental observations.
What happens when you open the curtains just
a little, and then a little more? Are the stripes
going in the same direction as the curtains or
crosswise? How many stripes are there,
compared with how many folds there are in the
curtains? Can you rearrange the curtains
to have fewer folds and see what that does to the
patterns?I just visited with Prof. Harry
Kroto, who won the Nobel Prize for helping to
discover 'bucky balls.' He
is working very hard now on bringing science to
kids and schools all over the world. He has a
website called "The Vega Science Trust."
He showed me part of an online talk about DNA
by Armand Lucas that showed how you can shine a
laser pointer at a slide with a stack of tiny
parallel lines and get a row of dots on the
wall.But that works only with lines that are
very close together.
One more question - is there a
screen on your window? Best wishes, and
congratulations on your scientific window
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