Young's Experiment

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From: Cbdirtball@aol.com
Date: Mon Sep 02 2002 - 12:37:12 PDT 

From: Cbdirtball@aol.com
Message-ID: <88.1d7ea206.2aa517e8@aol.com>
Date: Mon, 2 Sep 2002 15:37:12 EDT
Subject: Young's Experiment

The other day a student asked a good question that puzzled me:

When light (as in Young's double-slit experiment) interferes destructively,
where has the energy gone that existed in the two waves that interfered?
When a demonstration of interference is conducted with a spring and filmed,
it is clear that that while the two waves with opposite displacement cancel
each other for a brief moment, energy is present in the spring at the nodal
point.

Is there corresponding stored energy when light interferes destructively?

Charlie Bissell
Hillsdale High School

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