I wasn't clear : phase shift has a clear example: think of two sine waves, one whose value at time t is sin(t) and the other sin(t+pi/2). they'd have the sam

I wasn't clear : phase shift has a clear example: think of two sine waves, one whose value at time t is sin(t) and the other sin(t+pi/2). they'd have the same period, and frequency, but would be phase shifted by that addition in the time parameter. Here's a graphed example. https://www.wolframalpha.com/input?i=Plot%5BSin%5Bt%5D%2CSin%5Bt%2B1.57%5D%5D https://www.wolframalpha.com/input?i=Plot%5BSin%5Bt%5D%2CSin... For another fun example, here's the residential power in current American homes: two 120v A/C feeds, out of phase so that you can combine them in the breaker box to get 240v A/C. https://www.wolframalpha.com/input?i=Plot%5B120*Sin%5Bt%5D%2C120*Sin%5Bt%2B3.1415%5D%5D https://www.wolframalpha.com/input?i=Plot%5B120*Sin%5Bt%5D%2...