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Kay McNulty, Alyse Snyder, and Sis Stump operate the differential analyzer in the basement of the Moore School of Electrical Engineering, University of Pennsylvania, Philadelphia, Pennsylvania, circa 1942-1945.
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More: https://en.wikipedia.org/wiki/Differential_analyser
C&EI Railroad work crew. Villa Grove, IL. 1925.
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crap, no wonder why my shipment is late!! they are all just standing around!!!! I need that shipment of round tuits now!!!! I cant do any thing else till it get that shipment!!!
You need your round tuits and they are posing at the round house, they could head off in any direction.
Ralph
You can use this one that I've had for over 40 years...
Attachment 36619
I need a lot more than just that one, and thats pretty thin I dont know if it will hold up, especially with the hurricane that just went through...real effing slow.
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Kaplan-type turbine runner before installation. Photo by U.S. Army Corps of Engineers.
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sweet , variable pitch!! we used to run some boat props like that.
looks like a long way to fall - such a cool pic wouldn't be allowed today . . .
I assume this is a turbine for a hydro-electric plant.
