GCSE Physics - Pressure and Volume - How to use the "PV = Constant" Equation #30

The video tutorial explains how gas pressure is caused by particles colliding with container walls and how pressure can be increased by changing temperature, particle number, or volume. It introduces the PV equals constant equation, demonstrating that pressure and volume are inversely related. Two examples are provided: one calculates pressure when gas volume changes, and another involves compressing atmospheric air into a diving cylinder. An alternative calculation method is also discussed.

Describe the process of compressing 1800 litres of air into a 12 litre gas cylinder and how to calculate the resulting pressure.

What is the significance of atmospheric pressure in the context of gas laws, and how does it affect calculations?