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New
The latest blog posts to take off on Hacker News. 4,457 posts.
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What You Learned About How Planes Fly Was Probably Wrong
So we all know how planes fly, right? The top of the wing is rounded and the bottom of the wing is more straight. Air takes longer to travel over the top of the
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Dark Flash Photography - UV/IR Flash Instead of Visible Light
Dark Flash Photography To be presented at SIGGRAPH 2009, New Orleans. Download PDF Dilip Krishnan Rob Fergus Vision, Learning and Graphics Group Computer Science Department Courant Institute of Mat…
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Visualizing the Fourth Dimension Using Color
Color can be used to indicate position in 4D space
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Calorie restrictive eating for longer life? The story we didn’t hear in the news
Junkfood Science - truth about food and health
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PHYS771 Quantum Computing Since Democritus
University of Waterloo, Fall 2006 Tuesdays and Thursdays, 1:00-2:30pm BFG Building, 2nd floor seminar room (BFG2125)
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Steve Blank: Gravity Will be Turned Off
Part of marketing is the ability to communicate a message to thousands of people and convince them to believe your version of reality. When I was 19 I accidentally had a test run of my ability to d…
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Clocks, Kids, and General Relativity on Mt Rainier
In September 2005 (for the 50th anniversary of the atomic clock and 100th anniversary of the theory of relativity) we took several cesium clocks on a road trip to Mt Rainier; a family science experiment unlike anything you've seen before.
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A Non-Local Revolution
Paul Graham has recently argued for two points: first, that tech startups will continue to collect in Silicon Valley . Second, that startups may represent a new economic phase , replacing the corporate ladder of old . Now he’s suggesting that these two effects combined might lead to a very local economic revolution .
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Reversing Tooth Decay with Good Diet
In the last post, I discussed the research of Drs. Edward and May Mellanby on the nutritional factors affecting tooth formation. Dr. Mellan...
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Training Rats as Traders
I crafted this skinner box exclusively for the rattraders' training; it is equipped with airconditioning and a music device. The picture above shows the special light signal that indicates the start of trading. (image by Nora Friedel)
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Magenta Ain't A Color
All the colours in the light spectrum have complements that exist within the spectrum – except green. There seems to be some kind of imbalance. What is going on? Is green somehow being discriminated against? The light spectrum consists of a range of wavelengths of electromagnetic radiation. Red light has the longest…
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An analysis of the Buffalo air crash
(Ed. note: I was going to tell you some fascinating tales of my adventures in Kenya over the past few weeks, but that will have to wait…) Airplane crashes are almost always the result of a series o…
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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.
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How Depressions Work
On Capitol Hill sit many powerful people — Congressmen, Senators, Justices — but also numerous others who do the daily work of keeping government running. And, like anyone with such a weighty responsibility, they sometimes want a break: a chance to see a movie or eat out with their spouse.