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Posts filed under 'puzzles'

Tremendo truco de magia

No se lo pierdan…. amazing!

Add comment June 23rd, 2006

The Deepest Hole

Over forty years ago, researchers in the Soviet Union began an ambitious drilling project whose goal was to penetrate the Earth’s upper crust and sample the warm, mysterious area where the crust and mantle intermingle– the Mohorovičić discontinuity, or “Moho.” So deep is this area that the Russian scientists had to invent new ways of drilling, and some of their new methods proved quite inventive. But despite the valiant effort which spanned several decades, the Russians never reached their goal, and many of the Earth’s secrets were left undiscovered. The work done by the Soviets did, however, provide a plethora of information about what lies just beneath the surface, and it continues to be scientifically useful today. The project is known as the Kola Superdeep Borehole.

Blogged with Flock

Add comment June 21st, 2006

Rare counting ability induced by temporarily switching off brain region

BPS Research Digest: Rare counting ability induced by temporarily switching off brain region

Twelve healthy participants were given several chances to estimate,
from 50 to 150, how many blobs appeared on a computer screen. The blobs
appeared for just 1.5 seconds, and the number of blobs changed on each
attempt. Remarkably, the performance of ten of the subjects improved
drastically after Snyder’s team applied 15 minutes of low frequency
transcranial magnetic stimulation (TMS) to their left anterior temporal
lobe, a brain region that’s been implicated in autistic people with
rare counting and calcluating abilities.

Add comment June 11th, 2006

Mathematical LEGO Sculptures

Ecuaciones matemáticas creadas en LEGO… wow!

Lean el artículo completo, con más fotos.

Add comment April 26th, 2006

Descubren como romper el hielo

A high-tech way to defrost | CNET News.com

Humans have been getting rid of ice the wrong way for centuries, it turns out.

Dartmouth College engineering professor Victor Petrenko, not to be confused with one of the Champions on Ice, has devised a way to use a burst of electricity to remove ice caked on walls or windows. For surfaces coated with a special film, the jolt gets rid of ice in less than a second, far less time than it takes to hack at it with an ice scraper.

Add comment April 15th, 2006

Número ilegales

¿Sabían que existen números ilegales? Es uno de los conceptos más absurdos que he leído… Lean el artículo en la Wikipedia:

Illegal prime - Wikipedia, the free encyclopedia

Add comment April 15th, 2006

Octomatics - una nueva manera de contar

infoverse - octomatics

the octomatics-project is about a new number system
which has a lot of advantages over our old decimal system.
the name comes from the mixture of ‘octal’ and ‘mathematics’.

Interesantísimo… un nuevo sistema numérico basado en ocho números (0,1,2,3,4,5,6,7). Permite una conversión directa y visual con el sistema binario. Fácil de sumar y multiplicar. Con los dedos, podemos contar hasta 24. Sirve para horas y calendario.

Add comment March 28th, 2006

Douglas Adams tenía razón… la respuesta es 42!

Seed: Prime Numbers Get Hitched

There is an important sequence of numbers called “the moments of the Riemann zeta function.” Although we know abstractly how to define it, mathematicians have had great difficulty explicitly calculating the numbers in the sequence. We have known since the 1920s that the first two numbers are 1 and 2, but it wasn’t until a few years ago that mathematicians conjectured that the third number in the sequence may be 42—a figure greatly significant to those well-versed in The Hitchhiker’s Guide to the Galaxy.

It would also prove to be significant in confirming the connection between primes and quantum physics. Using the connection, Keating and Snaith not only explained why the answer to life, the universe and the third moment of the Riemann zeta function should be 42, but also provided a formula to predict all the numbers in the sequence. Prior to this breakthrough, the evidence for a connection between quantum physics and the primes was based solely on interesting statistical comparisons. But mathematicians are very suspicious of statistics. We like things to be exact. Keating and Snaith had used physics to make a very precise prediction that left no room for the power of statistics to see patterns where there are none.

Add comment March 28th, 2006