questions about light

From: "laura" <laura.brandusan@xxxxxxxxx>
Date: 26 Mar 2006 01:20:29 -0800

Dear all,

I do have some simple questions about light and its properties:

1. How a light ray can be divided into 2 or more sub-rays which have
the same wave length? What devices are available for this?

2. How can I change the wave-length of a given light ray? What is the
greatest precision achieved for this operation?

3. How do I measure the wave length of a light ray?

4. How many rays having different wave-length can travel (in the same
time) through an optical fiber cable?

Thanks,
Laura

.

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