There's a problem with assuming that "people float, therefore their
density must be 1.0-ish".
People *FLOAT*, therefore they are less dense than water. Things that
are AS DENSE as water are neutrally boyant, and do not float. Nor do
they sink.
Humans, on the other hand, bob around at the surface for approximate
values of "surface" due to varying density between say, the upper torso
(full of lungs) vs lower torso (interesting variations in fat
distribution) vs limbs (lack of sinuses, digestive tract, OR lungs) vs
head (sinuses, the void of the mouth and throat, etc).
All the numbers I have suggest that humans have a density roughly around
0.75 kg/liter or 47 lbs/cu. fo. and this certainly seems consistent with
observed behavior, along with being comfortably in the "denser than many
types of wood, but less dense than notoriously dense woods" range.
--
Emily Smirle - Gal Dynamo
<[EMAIL PROTECTED]>
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