MadSci Network: Physics
Query:

Subject: hologram effect with water waves

Date: Tue Nov 21 11:01:27 2000
Posted by John
Grade level: 7-9 School: st. joseph middel school
City: little rock State/Province: ak Country: USA
Area of science: Physics
ID: 974822487.Ph
Message:

could someone explain to me how when an object gets dropped in water, and 
the resulting waves are made into a photographic plate, how can that 
photographic plate contain the size and shape of the object that was 
dropped in the water.  i saw this demonstrated, and don't understand it.
also, what would happen if you took ocean waves and made them into a 
photographic plate, what would you see?
hope this all makes sense, because it's really interesting to me.
I saw this at a science fair a few months ago.  I can't find anything on the
web, or in my book on holographs.  The demonstrator had some photographic
plates of the water ripple images, and he demonstrated how the plates, when
placed into the holographic laser system, could create the floating image of
the object that was dropped into the water.  He didn't have any theory as to
how it worked, I think he was just showing something that he'd seen before.

John                                                                  





Response:


Re: hologram effect with water waves
could someone explain to me how when an object gets dropped in water, and 
the resulting waves are made into a photographic plate, how can that 
photographic plate contain the size and shape of the object that was 
dropped in the water.  i saw this demonstrated, and don't understand it.
also, what would happen if you took ocean waves and made them into a 
photographic plate, what would you see?
hope this all makes sense, because it's really interesting to me.
-john


_______________________________________________________________
Greetings - Your question was not submitted to the
MAD Scientist Network for the following reason:

Please provide further specifics. As it stands it would be
difficult for us to find an answer to your question. Questions may
be resubmitted via http://www.madsci.org/submit.html

Specifically, please tell us where you saw this
demonstrated.  Any Web sites we can go to ?

	John Link, Admin
 MadSci Network
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Re: hologram effect with water waves

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