Electromagnetic Waves Frequency

  • #1
I was watching the lectures on the MIT OCW course 5.111 where it was said that electromagnetic radiations are periodic variations of the electric field. Does it mean that when we are talking about electromagnetic radiation, frequency indicates how quickly do the electric fields change(their direction and magnitude).
 

Answers and Replies

  • #2
sophiecentaur
Science Advisor
Gold Member
2020 Award
25,987
5,280
Yes - a frequency of 1Hz means that there is one cycle of oscillation of the fields per second. A cycle is the period during which an oscillation goes through a complete range of values - up, down and back to the beginning. Frequency is 1/(time taken for one complete cycle). That goes for all forms of oscillation btw.
 
  • #3
Thanks . And does amplitude represent the maximum magnitude the electric field can reach??? What really puzzles me is what the wavelength represents in this case.
 
  • #4
jtbell
Mentor
15,765
4,008
And does amplitude represent the maximum magnitude the electric field can reach???

Yes.

What really puzzles me is what the wavelength represents in this case.

It's the distance along the direction that the wave is traveling, between two points of maximum magnitude, or between two points of minimum magnitude.
 
  • #5
Thanks a lot guys!!!
 

Related Threads on Electromagnetic Waves Frequency

Replies
51
Views
3K
Replies
2
Views
689
  • Last Post
Replies
7
Views
1K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
9
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
2
Replies
37
Views
6K
  • Last Post
Replies
1
Views
1K
Top