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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from 20,000 Leagues Under the Sea by Jules Verne: of a size equal to this tenth, or capable of holding 150 tons,
and if I fill them with water, the boat, weighing then 1,507 tons,
will be completely immersed. That would happen, Professor.
These reservoirs are in the lower part of the Nautilus.
I turn on taps and they fill, and the vessel sinks that had just
been level with the surface."
"Well, Captain, but now we come to the real difficulty.
I can understand your rising to the surface; but, diving below
the surface, does not your submarine contrivance encounter a pressure,
and consequently undergo an upward thrust of one atmosphere
for every thirty feet of water, just about fifteen pounds
20,000 Leagues Under the Sea |
