There's a phenomenon where I think you can sense the physical reality of complex numbers. When to propagating waves meet, and they are of opposite phase, they c

There's a phenomenon where I think you can sense the physical reality of complex numbers. When to propagating waves meet, and they are of opposite phase, they cancel out. At the meeting point the combined amplitude becomes zero. Despite of apparently total cancelation the two waves emerge undisturbed on the other side of the "silent" point. A wave can be described with rotating complex numbers of constant modulus. The two waves will each have its own modulus intact even at the point of cancelation. So the sum-to-zero real value is not really real.