Letty Liu 1K wrote:I'm also confused about the relationship between the frequency of electromagnetic radiation and the extent of change in the electrical field.
I second DHavo_3H's post. The extent of change in an electrical field at a given point has a positive correlation to the frequency of electromagnetic radiation.
Think of a wave.
Frequency refers to how many repetitions or cycles take place per second. (How many times a wave returns back to a specified initial starting point per second).
The extent of change in an electrical field refers to how often the electrical field returns back to a specified initial starting point. (Just as above, without considering time as a unit).
Therefore, if the frequency of electromagnetic radiation (repetitions per second) decreases, then the extent of change in an electrical field at a given point (# of repetitions back to given point) must decrease.