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1 posted on 03/21/2008 2:01:23 AM PDT by Swordmaker
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To: AndrewC; commonguymd; dozer7; Eaker; ForGod'sSake; Fractal Trader; Fred Nerks; FReepaholic; ...
What is this problem with Dinosaurs and gravity? And what does it have to do with weightlifters? PING!

If you want on or off the Electric Universe Ping List, Freepmail me.

2 posted on 03/21/2008 2:04:13 AM PDT by Swordmaker (There ain't no such thing as a free app...)
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To: Swordmaker

So there was less gravity back then?


3 posted on 03/21/2008 2:39:55 AM PDT by nikos1121 (I'm voting for McCain...and fixin' to get excited about it.:)
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To: Swordmaker

Might answer my “why were they so big” question.


4 posted on 03/21/2008 2:45:35 AM PDT by KSCITYBOY
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To: Swordmaker

This is a very heavy load of BS.

Without some kind of theory, or even speculation, as to how the gravitational force of a planet of basically constant mass changes over time, this is like some kind of “aliens abducted my wife and got her pregnant” story.


6 posted on 03/21/2008 2:55:52 AM PDT by samtheman
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To: Swordmaker
The link you provide above for this article is http://www.kronia.com/symposium/holden.txt, however it seems that this text comes from the similar, but not quite same, page: http://bearfabrique.org/Catastrophism/sauropods/biganims.html

Even that page lacks the images you show. Do you have any further information on the origins of this post?

7 posted on 03/21/2008 3:01:00 AM PDT by ThePythonicCow (By their false faith in Man as God, the left would destroy us. They call this faith change.)
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To: EarthBound

Interesting questions.


32 posted on 03/21/2008 4:39:28 AM PDT by MacDorcha (Arm yourself!)
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To: Swordmaker
Bad as the calculations involving muscle capabilities appear to be for dinosaurs, the question of torque on their necks looks worse. A giraffe barely gets blood to his head with a neck just under 20' long. A big sauropod's neck could easily have gone to 50' or 60' and scientists are agreed they could not have held them upwards since the heart needed to get blood to their brains wouldn't even fit inside their bodies. Nonetheless if they held them outwards as is being suggested, they would face (in our present world at least) an unbelievable problem with torque. A big sauropod's neck could easily have weighed 30K - 40K lbs and if the center of gravity of that neck was 20' out from the shoulders, you'd be looking at most of a million foot pounds of torque and a requirement to hold that 24/7 with with muscle and sinew.

Nothing in normal experience is ballpark for that sort of a torque figure; that would be roughly ballpark for the combined maximum torque of all of the engines of a large WW-II battleship or one of our largest modern carriers, i.e. the torque needed to drive a 55,000 ton ship through the water at 30 - 35 knots.

35 posted on 03/21/2008 6:30:58 AM PDT by jeddavis
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To: Swordmaker

A somewhat childish example of reasoning from consequents to ground, a formal logical fallacy.


41 posted on 03/21/2008 8:24:50 AM PDT by RightWhale (Clam down! avoid ataque de nervosa)
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To: Swordmaker

Oh God! Teh Stupid! It Burns! It Burns!


43 posted on 03/21/2008 9:04:56 AM PDT by doc30 (Democrats are to morals what an Etch-A-Sketch is to Art.)
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To: Swordmaker
Good article...I'm sure most structural engineers know that the huge sizes of the long-necked herbivores are indeed impossible in today's earth gravity.

Looking at the bible, there has been representations in the heavens of situations and entities that are on earth. The Moon and Saturn have represented Satan in some places in the bible...for instance, in Revelation, the antichrist's reign is given in months and Christ's reign is given in years.

The bible says that in ancient times (pre-Adam times), Satan was the "Cherub that covereth" so was Saturn the planet that covereth I wonder. If the earth used to be in a close orbit around Saturn or some kind of close diamagnetic lock with Saturn somehow, the gravity of Saturn would offset the earth's on the surface of the earth and pave the way for these huge dinosaurs to survive.

44 posted on 03/21/2008 9:10:06 AM PDT by Partisan Gunslinger
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To: Swordmaker

Oooh, the “Thunderbird”:

http://www.lightmission.com/Admin.Web/Images/Teratorn-25ft.jpg

BTW, let me be the first (I guess, I didn’t read any comments yet) to accuse you of being, in reality, Ted Holden / medved. ;’)

I’ve never found this particular argument to be compelling; it is rooted in the idea that the “bronto”saurus had to wade to allow the water to support some of their weight, then eventually got stuck in the mud, died, fell over, and became fossilized. :’)


48 posted on 03/21/2008 10:05:08 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/______________________Profile updated Saturday, March 1, 2008)
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The missing Tripod image is hosted on GeoCities now:

http://www.geocities.com/anthrosaurs/DinoList.html
http://www.geocities.com/anthrosaurs/Pteranodon.html


52 posted on 03/21/2008 11:09:11 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/______________________Profile updated Saturday, March 1, 2008)
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To: Swordmaker
It is a fairly easy demonstration that nothing any larger than the largest elephants could live in our world today.

The existence of the Blue Whale proves that this piece is nonsense in the very first sentence:


54 posted on 03/21/2008 11:18:07 AM PDT by Alter Kaker (Gravitation is a theory, not a fact. It should be approached with an open mind...)
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To: Swordmaker

Accretion. The Earth and all bodies with sufficent mass gain more, and as they gain, their mass increases, causing more accretion. The figure I’ve seen most is 0.1%/year(dust, meteors, and water), but even at a magnitude less(.01%), it adds up.


80 posted on 03/21/2008 5:48:31 PM PDT by PeaceBeWithYou (De Oppresso Liber! (50 million and counting in Afganistan and Iraq))
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To: Swordmaker
In fact the structure of mouse muscle and elephant muscle is so similar that a microscopist would have difficulty identifying them except for a larger number of mitrochondria in the smaller animal.

Except that a small chimp, small compared to a 6 foot human, can completely tear the human a new arsehole.
122 posted on 03/23/2008 7:01:43 PM PDT by aruanan
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To: Swordmaker
The Impossible Dinosaurs - Megafauna and Attenuated Gravity


The possible Dinosaurs - thru Scaling
129 posted on 03/23/2008 9:27:09 PM PDT by modican
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To: Swordmaker

bookmark for later


144 posted on 03/26/2008 7:03:09 PM PDT by valkyry1
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To: Swordmaker

http://microlnx.com/dinosaurs/OriginOfDinosaursAndMammals.html

On the Origin of Dinosaurs and Mammals - Excerpt:

...Dynamical principles of locomotion indicate that a gravity reduction will lower the speed at which animals change gait. In adapting to reduced gravity, the advanced thecodonts may have shifted from a bipedal symmetrical running gait to a bipedal asymmetrical hopping gait, much as the Apollo astronauts did on the Moon. This behavioral shift by the thecodonts engendered fundamental structural changes, including the fully erect gait and obligatory bipedal pose that characterized primitive and many advanced dinosaurs. Like kangaroos, the ectothermic archosaurs may have relied on elastic storage and rebound to hop at high speeds over long distances at a low metabolic cost, which gave them a competitive edge over the proto-endothermic therapsids...

(HEY, CIV, I TOLD YOU THEY HOPPED!)

Dinosaur Giantism

http://microlnx.com/dinosaurs/Giantism.html

At 20 tons, Baluchitherium, a rhinoceros from the late Oligocene and early Miocene, was the largest of all land mammals, living or extinct. Compared to a modern rhino or elephant, Baluchitherium was truly gigantic. But according to Bakker, 20 tons was only the average size of Morrison sauropods. Larger sauropods, of 50 or even 100 tons, are known to have lived. How did they support themselves? Economos, together with an earlier generation of paleontologists, opted for the amphibian solution: “Apparently, the buoyancy of water has made possible the evolution of sea mammals much larger than the largest land species. (This was also true of dinosaurs.)”20 Bakker, however, has shown that sauropods were land-dwellers; hence, they could not rely on buoyancy to support their bulk. Thus, we have a paradox: either 20 tons is the maximum size for a land animal, in which case Bakker is wrong about the terrestrial habits of sauropods, or else Economos is wrong and land animals larger than 20 tons can exist.

There is, of course, a simple solution to this paradox, a solution that validates Bakker’s empirical findings without violating Economos’s theoretical analysis. Reduced gravity during the Jurassic would have permitted land animals to achieve body sizes not possible under present-day conditions. In a previous section, it was argued based on the skeletal scaling Equation (3) that a 20% reduction in gravity would permit an order of magnitude increase in body mass of the very largest land animals without any increase in the fraction of body mass devoted to the skeleton. The mass of the largest sauropods was probably about 100 tons. It is therefore worth noting that for Gmax= 0.8G, Economos’s Equation (6) yields a maximum body size of about 100 metric tons.



179 posted on 03/31/2008 3:27:43 AM PDT by Fred Nerks (a fair dinkum aussie)
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To: Swordmaker
No animal the same weight as one of these men could be presumed to be as strong.

Nonsense. An adult chimp smaller than these power lifters could rip their damn arms off and beat him over the head if they want too. The average chimp could bench press over 1000 pounds and not even strain.

201 posted on 03/31/2008 11:09:43 AM PDT by Ditto (Global Warming: The 21st Century's Snake Oil)
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To: Swordmaker

IMHO, the antedeluvian world was of smaller diameter.....there are “giant” human remains that may suggest this as well.


274 posted on 04/05/2008 4:13:34 AM PDT by mo
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