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Feb
14th
Tue
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Credits: Scale of the Universe 2 was created by Cary and Michael Huang.

Drag the scrollbar or use your mouse-wheel to zoom in and out of the universe.

Source: Scale of the Universe 2012 - OneMoreLevel.com)

Tags: universe   science  
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Jan
8th
Sun
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Brain reasoning, bayesian networks, abstraction and Markov chains

Surely just reinventing the wheel here, but human brain looks like a sophisticated bayesian Markov chain machine with abstraction capabilities.

It is a Markov chain machine in the sense that our brain, through learning and experience, builds and updates over time a large matrix of conditional probabilities. By counting the number of instances of concurrent events A, B, C, …, I, X in real life, the brain constantly updates the probability of outcome X given the occurrence of A, B, C, …, I. Or in mathematical terms, P(X|A,B,C,…I).

Abstraction capabilities allow then the brain to build upon fundamental conditional probabilities P1, P2, P3, Px based on direct experiences, to create a second, third and iteratively n-th layer of more complex probabilities, for example P(Px|P1,P2,P3,…).

This wealth of information could be encode in chromosome-like strings to be passed on and further processed.

Tags: science   artificial intelligence   neural networks   brain   cognitive science  
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Oct
18th
Tue
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jasonadriaan:

The future!

In layman’s terms, when a superconductor is brought to a very low temperature and placed over a magnet it is able to be pinned within the magnetic fields causing it to levitate.

- Here is a video that explains how this works

- Here is a video that explains how to improve the pinning and to make the levitation happen over a larger distance 

- Meissner Effect explained

- Superconductivity explained 

- Flux pinning explained

Imagine how cool it would have been if superconductors were capable of levitating in magnetic fields at room temperature?

Imagine how cool it would be if we could take advantage of Earth’s natural magnetic fields and build hoverboards!

The possibilities are endless!

Tags: science   superconductor   levitation  
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Sep
25th
Sun
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Masterminds

Yes folks, I am an INTJ.

Tags: science   intj   myers-briggs   sociology  
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Sep
16th
Fri
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Tags: science   pi   math   mathematica  
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Jul
7th
Thu
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People’s likelihood to cheat doubled, from 21% to 43%, if the benefits were split with another person, according to a series of experiments by Scott S. Wiltermuth of the University of Southern California. The experiments, in which hundreds of people participated in word games and other activities online, suggest that splitting the benefits makes cheating seem less unethical, Wiltermuth says.
Tags: science   cheating   social science  
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May
17th
Tue
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Tags: internet   javascript   linux   browser   science  
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May
11th
Wed
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A number of economists have shown recently that income levels and real growth depend upon trust—trust greases the wheels of exchange.
Tags: economics   science   trust   freaknomics  
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Mar
31st
Thu
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Tags: science   world  
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Mar
29th
Tue
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Tags: science   leaf   solar   energy   MIT  
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