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Electromagnetic Radiation

Posted: Wed Oct 17, 2018 1:12 pm
by jane_ni_2d
Why is it that when frequency decreases, the extent of change in the electrical field at a given point also decreases?

Re: Electromagnetic Radiation

Posted: Wed Oct 17, 2018 3:53 pm
by Manya Bali 4E
When I think about a change in the electrical field, I think it refers to a change in amplitude. Waves can get bigger or smaller, and as that happens, their electric field also gets bigger or smaller. If you imagine the drawing of a wave, the waves get kind of flattened when the frequency decreases as the wave stretches out and gets longer. Thus, it has a lower amplitude, and the extent of change also decreases.

Re: Electromagnetic Radiation

Posted: Wed Oct 17, 2018 4:01 pm
by Hedi Zappacosta 1E
I think it is because electromagnetic radiation is essential energy going through a space, and when frequency decreases, so will energy since frequency and energy are directly proportional by the equation E=hv

Re: Electromagnetic Radiation

Posted: Wed Oct 17, 2018 9:15 pm
by dgerges 4H
the slope of the wave decreases which in turn decreases the extent of change in the electric field