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George Plhak
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Amazing

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bad system drive
Without warning, my C: drive on my main computer quit a couple of days ago. I was able to keep working on a backup machine which is physically the same as the main computer but without all the software. Fortunately most of my work was on another drive which...

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"Marc Raibert, founder of Boston Dynamics, described the wheeled robot that he unveiled for the first time today. 

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The UofWaterloo team (Waterloop) didn't make it to the finals (partial vacuum run) this weekend unfortunately. UofToronto also has a team but they did not compete this weekend. 

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largest solar furnace

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Impressive!
They had to go with pick axes and chain saws to get at the forward hatch however...


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fresnel lens 3
rimstar.org has a useful video about fresnel lenses. He discusses the issue of which side of the lens should face the sun and does some tests. From about 2:20 to 4:50, he measures the focal length of his lens in both orientations. His is the same 32 inches ...

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interesting diy solar concentrators
I have been watching the progress of сергей юрко on YouTube with his very interesting solar trough project. "Sergey Briskly" according to Google Translate, "Sergey, Mirgorod, Poltava region" (of Ukraine) as he describes himself and gives his phone number in...
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