/sci/ - Science & Math

>>6727931
>>6728068

The red arrows are the E fields.

When you add 2 poyting vectors, lets just care about the E fields.

<span class="math">

\\E_1 = E_0 e^{i(kx-wt)} \;\hat{x}\\

E_2 = E_0 e^{i(kx-wt)\pm i\frac{\pi}{2}} \;\hat{y}\\
E_1+E_2 = (E_0e^ {i(kx-wt)}) (\;\hat{x} + e^{i\frac{\pi}{2}} \;\hat{y})\\
[/spoiler]

Now, E_1 oscillates in x, E_2 oscillates in y, and you is at the peak while the other in in the 0

and if you add the e fields, you get an e field that turns in a circle.