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Physics
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Johannes
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Theoretical physicist by training, PhD in spin-polarized quantum systems. Inventor of the DPD micro-hydrodynamics simulation methodology, and specialized in computational physics. Currently chief scientist for a large multinational company. Blogger at Science2.0.

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117
Why are most metals gray/silver?
Jul 27, 2013
74
Why is information indestructible?
Jul 31, 2013
64
Why is the moment of inertia (wrt. the center) for a hollow sphere higher than a solid sphere (with same radius and mass)?
Feb 23, 2014
64
Why does dry spaghetti break into three pieces as opposed to only two?
Jul 20, 2013
58
How can you weigh your own head in an accurate way?
Jul 12, 2013
37
What is information?
Jan 14, 2011
35
Why did high quality mirrors use aluminum coatings instead of silver?
Jun 2, 2014
35
Why are magnetic fields so much weaker than electric?
Jul 29, 2014
34
What are the next generation physics experiments?
Apr 18, 2016
34
Why does the nature always prefer low energy and maximum entropy?
Dec 20, 2012
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Visually stunning math concepts which are easy to explain
48
Pythagorean Chess: Knishops
36
Chasing pirates
31
One prize, infinitely many choices
25
Digging a tunnel between random locations