eli5 wtf is phase difference

Question

I’m studying for my finals and i feel stupid because of that shit please help

In: 0

Answer 1

The phase is where the wave is at, so if you do a sine wave with your finger you’ll move it up then down then up in an oscillating pattern. The point where the finger is along the wave is the wave’s phase.

Now do another different wave with your other hand and start moving both of them.

Stop and superpose the fingers. The difference between the fingers’ heights is the phase difference