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Patrick Smith

I did something very similar years ago while in 'Middle School' in South Carolina. I took brews of microscopic organisms, primarily protozoans and rotiferas (about all my limited microscopy technology allowed back in the late 60s), attached them to a plywood disk ( 1M diameter) bolted to a large high-speed electric motor (1000+ rpm) motor, and turned it on. Rotating at an approximate 3x10E3 meters per second caused extreme centrifugal forces on the cultures. I continued this for varying periods, from 1 hour up to 24 hours. The forces essentially made 'mush' of the protozoans and multi-cellular species present, as none of these could subsequently be located in microscopic observations. There was some suggestion that bacteria and yeast may have survived, but available resolution did not allow a definitive identification of these among the myriad fragments and waste products of the destruction of the larger organisms. I did not analogize centrifugal force with gravity, however similar and the results were remarkably uninteresting, except ... perhaps among those considering centrifugal extermination of protozoans and multi-cellular microscopic species. It all made for a rather dreary and unexciting 6th grade science project. I'm glad in this case a bit more could be made of it....


Patrick, Nice story. Many thanks for sharing it.


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