Phase Difference in Waves

Phase Difference in Waves

### Formula

$$\Delta\phi=\frac{2\pi\Delta x}{\lambda}$$

### Time Form

$$\Delta\phi=\frac{2\pi\Delta t}{T}$$

### Terminologies

- Δφ → Phase difference.

- Δx → Distance difference.

- Δt → Time difference.

### Conditions / Special Cases

- Same phase:

$$\Delta\phi=2n\pi$$

- Opposite phase:

$$\Delta\phi=(2n+1)\pi$$

### Usage

- Used in interference and wave comparison problems.