Boyle's Law
### Formula:
$$P_1V_1=P_2V_2$$
### Terminologies:
- $$P_1$$ β Initial pressure of gas.
- $$V_1$$ β Initial volume of gas.
- $$P_2$$ β Final pressure of gas.
- $$V_2$$ β Final volume of gas.
### Usage:
- Used when temperature remains constant and pressure-volume relationship is required.