$c=\lambda v$

jane_ni_2d
Posts: 67
Joined: Fri Sep 28, 2018 12:23 am

Why is it that when frequency decreases, the extent of change in the electrical field at a given point also decreases?

Manya Bali 4E
Posts: 66
Joined: Fri Sep 28, 2018 12:23 am

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.

Hedi Zappacosta 1E
Posts: 66
Joined: Fri Sep 28, 2018 12:27 am

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

dgerges 4H
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Joined: Fri Sep 28, 2018 12:24 am