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Re: FW: Dinosaur Weights

Allan wrote:
> I guess it is a matter of approximation.  We say the density of water is 1
> gram to 1 cubic centimeter.  I suspect that it is true until you reach the
> cubic meter size and above.  I don't know in which direction (without looking
> it up somewhere) the discrepancy lies.  This is sort of like "E=mc2"  -  which
> is true, but not precise in all instances.  The more complete version of the
> formula is "E=mc2 + m2c4" [in case this doesn't pass through the email
> correctly - the first formula is E = m c (squared) and the second formula is E
> = m c (squared) plus m (squared) c (to the fourth)].  The lesser terms tend to
> fall out of the formulas because they are usually unimportant to the task at
> hand.  On occasion, it does matter.  Some scientists like to speak as
> precisely as possible, so they will remind you that this number is not exact.
> Just as I wish some paleontologists would say that "This is what I think the
> dinosaurs were like" vs. "This is what the dinosaurs were like"!!!
> ----------
> From:  Dinogeorge@aol.com
> Sent:  Saturday, August 23, 1997 12:08 PM
> To:  EDELS@classic.msn.com; dinosaur@usc.edu
> Subject:  Re: FW: Dinosaur Weights
> In a message dated 97-08-23 07:09:31 EDT, EDELS@classic.msn.com (Allan )
> writes:
> << "Most animals have about the same density as water."
>  This is about 1000 kilograms per cubic meter. >>
> By definition, it should be exactly 1000 kg/m^3. But it's not. Anybody out
> there know why not? I've been wondering for years.

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