How would you calculate the amplitude of an electromagnetic wave?

1. Jan 1, 2012

warfreak131

Would it just be the energy of the wave (i.e. E = hf)?

2. Jan 1, 2012

diazona

Actually no, the energy is proportional to amplitude squared.

3. Jan 1, 2012

warfreak131

oh, can you give me a link to an exact equation? id appreciate it

4. Jan 1, 2012