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Author Question: How are the wavelength and frequency of an electromagnetic wave related? What will be an ideal ... (Read 97 times)

DelorasTo

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on: Jul 14, 2018
How are the wavelength and frequency of an electromagnetic wave related?
 
  What will be an ideal response?

Question 2

Why do negative feedback loops tend to diminish the effect of disturbances?
 
  What will be an ideal response?


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GCabra

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Reply #1 on: Jul 14, 2018
Answer to Question 1

An electromagnetic wave can be described by: . Thus, the longer the wavelength, , of an electromagnetic wave, the lower must be its frequency, , and vice versa.

Answer to Question 2

For simplicity, consider a two component system linked by a positive and a negative coupling. If one component is perturbed, the sign of that perturbation is retained through the positive coupling but reversed through the negative coupling. Thus, overall the negative feedback loop reverses the sign of the initial perturbation, tending to restore the system to its initial state.


DelorasTo

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Reply 2 on: Jul 14, 2018
Excellent

frankwu0507

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Reply 3 on: Yesterday
:D TYSM

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