pressure

Pressure, P

Force per unit area

we live at the bottom of a pool of gas, our atmosphere

the pressure is the weight of our atmosphere

1013 mBar

101.3 kPa (kilo Pascals)

1.013 Bar

15 psi (pounds per square inch)

760 mm (30 inches) of mercury

10 m (33 ft) of water

in the ocean:

the pressure 10 m below the surface is 2 Bar (30 psi)

like your car tire

the pressure 1.6 km (one mile) below the surface is 2000 psi

a full dive tank is 2,500 – 3,000 psi

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