5:00 "...and for every ten meters under that, it then goes up exponentially." Not really. The pressure is a linear function of depth, not an exponential one.
@@Hans_Magnusson Pressure ratios are important, but they are not the same thing as pressure in absolute terms. The dimension of pressure is [M L^-1 T^-2]. Once we divide pressure by pressure, those dimensions cancel out and we are left with a dimensionless entity. From 10 msw to the surface the pressure change is exactly the same as from 20 msw to 10 msw. In fact, msw is not even a unit of length but a pressure unit, so the change in pressure is -10 msw or -1 bar in both cases.
