"Hello Pathfinder,
I went to the effort of making a firberglass model of the trilobe bowl(the first in 5000yrs,no egyptoligist or expert could be bothered) I can show to all interested that this item is capable of pushing water, you can replicate this fore yourself, if your interested, I could, therefore you can.
I have posted photo's in this thread how I went about this.In my opinion form follows function(the opposite to some on this site).
Some folk on this site feel that items dug up by egyptoloist's are only ritural or ornimental therefore not part of a functional group.
Why have a raised cental hub? Why have a circumferential band? Why does it create a vortex when spinning?
There'r are double standards on this site by the control freaks that the herd follows.........
If i use Emery or Alderd, there're to old for references... but it's ok for Wilkinson(1999)and Wendrow(2006)....but not for me to use.
I feel that i'm dealing with low brow interlectural snobbery...but then I'm not dealing with people with techincal qualifications.
I have been told that history and archeaology are soft sciences as apposed to the hard sciences of eningeering,phyics,chemistry and geology.
Path finder, best of luck with your time on this subject,
With regards trilobe....."
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Trilobe - I don't mean to "pile on " here, just attempt to clarify a few points.
1) I applaud your efforts in regard to constructing a replica of the artifact in question. Well done.
2) As an adjunct to my regular research, I am also quite involved in experimental studies and, without going into detail, have more than a passing familiarity with quite a range of material types and the associated technologies (lithic, ceramic, metallurgical, faunal, floral, etc). My undergrad work was in Bio./Math and Chem. I also have two shops that are quite well outfitted. Not "soft" stuff. Thus I am rather familiar with the properties of both fiberglass and a wide array of lithic materials.
3) One must be aware of the "structural properties" of schist. This is a rather soft material that tends to exfoliate. To subject the lightly structured trilobe to high RPM's in a medium such as the atmosphere would likely lead to rapid disintegration due to centrifugal stress. In a medium such as H2O, this would be an almost certainty.
4) I am unaware of any research that would indicate bearing load wear on the interior of the central hub. In a material such as schist, such wear would be expected to appear quite rapidly. Are you personally aware of any collaborative evidence?
5) While the design would certainly create a vortex, so does a flat wooden blade mounted at 180 degrees on a shaft in a 3/8 VSR. Not necessarily conclusive. Were the artifact designed as a true impeller, why are the "blades" of symmetrical pitch?
6) I am also unaware of the recovery of any of the multitude of other elements of the mechanism(s) with which this artifact would have to been incorporated in order to function as speculated.
7) Your understanding that "form follows function" is not, in itself, incorrect. However, one may wish to consider the functional intent of the original designer/creator.
Some factors to ponder.
.
Edited by Swede, 05 July 2010 - 12:33 AM.