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Re: [Phys-l] A demo for biologists?

On May 16, 2009, at 11:46 AM, ludwik kowalski wrote:

Thanks for the comment, Bernard.

If I had access to an optical table then I would make an attempt to
verify my dreamed idea, unless persuaded that it is also silly.
Placing my laser 15 meters away from the setup would produce a wide-
enough beam, without a pinhole.

I
wide laser beam - -> \ - - - leg 1 - - > / - - - > I
I ^ I
I I screen
I I
I I
\ - - - leg 2 - - > /




The drawing came to me deformed. Most of you probably guessed what I wanted to show. But let my try again.


wide laser beam - -> \ - - - leg 1 - - > / - - - > I
I ^ I
I I screen
I I
I I
\ - - - leg 2 - - > /





Let me also describe the picture in words, in case the drawing is deformed again. A wide laser beam is split into two parts by a semi- transparent mirror. The upper part, called leg 1, passes through the second semi-transparent mirror and arrives to the screen. The lower part, called leg 2, also arrives to the screen, after being reflected by two ordinary mirrors. Two beams are able to interfere on the screen.


- - - - - - - - - - - - - -
Ludwik Kowalski, a retired physics teacher and an amateur journalist. Updated links to publications and reviews are at:

http://csam.montclair.edu/~kowalski/cf/ http://csam.montclair.edu/~kowalski/my_opeds.html http://csam.montclair.edu/~kowalski/revcom.html

Also an ESSAY ON ECONOMICS at: http://csam.montclair.edu/~kowalski/economy/essay9.html