Phase difference is the difference in phase between two waves of the same frequency. It is measured in degrees or radians and describes how much one wave is shifted compared to the other.
The ratio of phase difference (φ) to angular frequency (ω) is known as the phase difference per unit frequency (φ/ω). This value is constant for waves of the same frequency, but can vary for waves of different frequencies.
Phase difference plays a crucial role in determining the interference pattern of two overlapping waves. When the phase difference is 0, the waves are in phase and will constructively interfere, resulting in a larger amplitude. When the phase difference is 180 degrees, the waves are out of phase and will destructively interfere, resulting in a smaller amplitude.
In real-world applications, phase difference can be measured using an oscilloscope or a phase meter. These devices compare the phase of the input signal with a reference signal and display the phase difference in degrees or radians.
Yes, phase difference can be negative. This occurs when one wave is shifted in the opposite direction compared to the other wave. In this case, the phase difference is represented by a negative value, indicating that the waves are out of phase.