Questions in the Science & Nature category.
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November 5

I've been watching a lot of Lie to Me, and it's making me think that I've got an answer to why I get misinterpreted a lot; is it possible that my microexpressions are "wrong"? [more inside]
posted by bartleby at 2:35 PM - 7 answers

What contributes more to the attractive force between a magnet and a thin piece of metal - the magnet's surface area, or its thickness? [more inside]
posted by howling fantods at 11:27 AM - 5 answers

Why are some clouds black while others are white? [more inside]
posted by zeoslap at 9:14 AM - 4 answers

November 4

I want to determine the difference between distributions. When would I use kl-divergence and when would I use rmse? It seems like both equations reduce deviation to a single number, but couldn't find a comparison between them.
posted by lpctstr; at 10:49 PM - 5 answers

What could be causing an image of Jesus to appear in this man's truck window? [more inside]
posted by longsleeves at 4:20 PM - 23 answers

Any recommendations for iPhone apps or Web apps that will be useful in a basic science lab. [more inside]
posted by roofus at 1:10 PM - 3 answers

Statistics question: is it possible to test sets of cumulative data for significant differences in rate? [more inside]
posted by rollick at 9:46 AM - 9 answers

I'm looking for something like Feynman's explanation for how a difraction grating works only for the absorbance of a colored chemical in solution. [more inside]
posted by Kid Charlemagne at 7:57 AM - 2 answers

November 2

How do I discover what day/night and seasonal cycles are like on a hypothetical unusual planet? [more inside]
posted by The otter lady at 6:06 PM - 5 answers

November 1

In 35 mm terms, how wide angle are our eyes? [more inside]
posted by history is a weapon at 5:40 PM - 20 answers

Are there roaches in every U.S. building? [more inside]
posted by emilyd22222 at 3:35 PM - 29 answers

How common is incest in the animal kingdom? [more inside]
posted by thisperon at 2:07 AM - 14 answers

October 31

What might one see hiking in the woods at night that looks like glowing eyes? [more inside]
posted by weston at 6:31 PM - 25 answers

October 30

Is there an enumeration of complete chess games? [more inside]
posted by Blazecock Pileon at 1:31 PM - 10 answers

Is there a website that would show the world sorted by elevation? I recently enjoyed reading Plague Year, a post-apocalyptic thriller. The main conceit of this science-fiction novel is that a nanotechnology plague that kills any warm blooded animal (including humans), but the disease self-destructs at altitudes above 10,000 feet. How much territory would this be across the whole planet? [more inside]
posted by seasparrow at 5:56 AM - 6 answers

October 29

Physics question - involving cars, air, momentum, force, etc... Basically - how can I calculate the side force from a crosswind on my car at any given speed? [more inside]
posted by krisak at 8:22 PM - 24 answers

bicyclefilter: Are there any sites or books that break down the science of a bicycle? [more inside]
posted by bluelight at 6:49 AM - 9 answers

Science! How can I use my excessive tech / management / leadership background to enable science (while still getting paid a living wage)? [more inside]
posted by TheOtherSide at 6:31 AM - 3 answers

October 28

Save Our Planet Filter: My girlfriend is doing a "green energy" engineering project and needs inspiration. This is a project for an electrical engineering class in college so give us your coolest ideas for green energy projects. [more inside]
posted by thekiltedwonder at 6:45 PM - 11 answers

Anyone know why the Ares rocket is that shape?
posted by Idcoytco at 4:28 PM - 7 answers

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