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To: E. Charters who wrote (88685)	8/11/2002 8:20:58 AM
From: d:oug	Respond to of 116766

zero gravity (or) location location location (or) lets see if we can explain this without the mathematics since some use a plugg'in into the formula to get the answer, but when one of the input conditions changes and requires changes to the formula, some folks have not the ability to do change, as in did not know what them plugg'in really meant. so Lets use planet Earth as being 100% water. I seem to remember one character of water is that it is near impossible to compress. Not sure about this, but lets assume eventhought it may not be important. ok, Now we need an external object to use as both a test device and to record data and send it back to me and Eric. . That lobot-head duhZaRoll is perfect as it is a sphere, water tight and able to communicate with us two guys. . ok, This planet Earth of all water, no nothing anything else. . Diameter is i have no idea. Boston to San Fran is 2,000 miles i think. I'll guess from Earth's surface to center is 5,000 miles. ok, duhZaRoll is on water's surface like a dull beach-ball. Now lets use the force of imagination and "pull" it down. Lets assume the density/consistency/etc of duhZaRoll is equal to a solid rubber ball. (or suggestions welcome) ok, Unlike pulling a balloon down into waters depth and see it become little'r and get very smaller very quick since the air would compress into a pin drop of liquid before a mile or two, this duhZaRoll is very dense (as if i needed to say that :o) and we are not compressing any air pockets, but really at the molecular level and it can take a lick'en and still... sorry, babbling ok, duhZaRoll original diameter is 10 inches. Earths diameter is 10,000 miles but we is focused on the trip from surface to the center 5,000 miles down under water. bBut, Lets take a small tangent first and view this using an Earth that has all its mass on the surface, like a steel sphere that is hollow, so lets make planet Earth out of lead only and at the surface with a depth of i'll guess 100 miles is solid lead and the 5,000 miles - 100 miles = 4,900 miles is empty like the vacuum of outer space that exist at Earth's surface. (oops) no Moon folks, sorry. . Opps2 in that we can not use same plug in the formulas as those for a uniform solid sphere of real planet Earth since the location location location is quite different now and going down 50 miles into the lead is similiar to the prior center of the Earth. But the only point i wish to make here is that if duhZaRoll was pulled down into the lead, and lets really stretch our imagination and assume the duhZaRoll's temperature was a self generating temp over leads melting and was able to be pulls down, that once it "popped" "down" under the 100 mile point that its gravity would be reversed as comparied to the surface and now have a tendency to be "stuck" under the lead surface. ok, but we will pull pull it down and once we reach Earth's center then yes, zero pull. ok, but this when the leaded Earth is empty space zero stuff inside it after the 100 mile surface depth. So yes duhZaRoll seems to be just hanging in mid air of size 10 inches, and if one was to appear and give it a kick then off it would "fly" :o) . ok, but back to original Earth of all water and the duhZaRoll at the center would have size of ??? At surface it was 10 inches as mentioned. At 1 mile depth in water it is less than 10 inches. At 100 miles depth huge pressure on all sphere "sides" really makes a dent in it and one could imagine this as placing a bucket of water on your head and then keep on stacking more buckets of water on top of the buckets until it was 100 miles high. HUGE weight. ok, bBUt Message from E. Charters Everyone thinks the earth's core is... But in fact at the earth's core... ... the centre may all be gas, or light material. It may even be hollow. If you don't believe this, just work out the calculus... [stop.] . bBut my water example of duhZaRoll shows that as one travels down deeper and deeper that its size will be compressed. Now at the very center there is equal pull of gravity every sandwhich way so that one's weight using a bathroom scale is zero. But pressure and gravity are apples and oranges yes E.C. ? d:oug

To: E. Charters who wrote (88685)	8/11/2002 9:38:14 AM
From: Zardoz	Read Replies (2) \| Respond to of 116766

Everyone thinks the earth's core is super heavy metals from the pressure of the superabundant overburden. But in fact at the earth;s core there is zero gravity. That's not the reason why people believe the earths' core has Heavy metals. It's because the differentiation due to density differences causes the metals to sink to the core & silicates rise while the outer surface of the earth was cooling. Nothing to due with Gravity, everything to due with Pressure.