What does it mean when two waves are Coherent?
Two waves are said to be ‘coherent’ when they have the same frequency and the same constant phase difference.
What does it mean when two waves are in antiphase?
When the phase difference between two waves is 180 degrees or π radians.
What does it mean when two waves are in phase?
When the phase difference between two waves is 0 degrees or 0 radians.
What is 360° in radians?
2π rad