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Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 17 posts.
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James Randi: This Cruel Farce Has To Stop
James Randi Educational Foundation
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Why aeroplane wings aren't dimpled like golf balls
Before explaining the purpose of dimples, we first need to understand the aerodynamic properties of a sphere. Let us start by looking at a smooth sphere without any dimples, like a ping-pong ball. If we lived in an ideal world without any friction, the air flowing around a smooth sphere would behave like that shown in…
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At peak, Spain gets 53% of its energy from wind
Ok, not all the time, but last weekend at 5:50am on Sunday morning (8th Nov) Spain set a new record, hitting 53.7% of its energy requirements being supplied by wind energy. As you can see from the graph above, the amount of electricity being supplied by wind, the light green portion of the graph, doesn’t […]
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Researchers Create Gold Aluminum, Black Platinum, Blue Silver
For both new and returning visitors, the University’s News Center is a digital hub for the latest news stories showcasing the research, accomplishments, expertise, and perspectives of the Rochester community. In addition, the News Center features University announcements and updates from newsrooms and publications…
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For a Quick Exit, Just Block the Fire Door
Learn about public engagement activities from the American Physical Society
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TED 2009: How to Grow Your Own Fresh Air
With only three varieties of plants, we can “grow our own fresh air” indoors, to keep us healthy. Learn more about these plants.