zOwie Omega Discussion Forum

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Re: seamaster

In Response To: seamaster ()

: Hi,

: I've noticed that the Seamaster is actually a
: lot heavier when it is underwater. Anyone
: knows the reason for this?

: Mayoke

The watch is not actually heavier...in fact it is being bouyed up by the water...bouyed upward by a force equal to the WEIGHT of the water it displaces. But there is more to it than this...

Your arm (and whole body for that matter) is also bouyed up by the same bouyant force, so the amount of effort to suspend your arm in water is LESS than the effort needed to suspend it in the air. Since the human body is only a little denser (overall) than water, BUT the watch is much denser than water, the net effect is that some people may "feel" that the watch (or any other very dense object) is heavier, when, in reality, it is not.

MMC

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0 wallclock secs ( 0.17 usr + 0.03 sys = 0.20 CPU)