November 2007
Intermediate to advanced
736 pages
46h 32m
English
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TRANSVERSE WAVES
We are already familiar with the way in which light energy travels from a source to arrive essentially at some other point which it illuminates. What is happening in the region through which the light is passing? If it were possible to stop such a light wave and take measurements along its path, we would detect two influences— a fluctuating electric field at right angles to the direction of the beam and a fluctuating magnetic field at right angles both to the beam and the electric field (Fig. 1.12).
The electric field (E) and the magnetic field (H) have the same wavelength and they keep in phase. The energy of light is stored in these two fluctuating fields, the pattern of which is preserved as it travels along. In fact, electromagnetic ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.