06 abril 2008

MODELOS Y TEORIAS

Via BackRe(Action) por Stefan Scherer y Sabine Hossenfelder,

"... Las palabras pueden lleva a malas interpretaciones en la comunicación científica si su uso científico tiene un significado diferente del coloquial...." Un post buenisimo (en inglés) sobre modelos, teorias y el mundo real en ciencia.


16 janeiro 2008

COSMOLOGIST BRAINS

clipped from www.nytimes.com

Big Brain Theory: Have Cosmologists Lost Theirs?

It could be the weirdest and most embarrassing prediction in the history of cosmology, if not science.

If true, it would mean that you yourself reading this article are more likely to be some momentary fluctuation in a field of matter and energy out in space than a person with a real past born through billions of years of evolution in an orderly star-spangled cosmos. Your memories and the world you think you see around you are illusions.

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15 janeiro 2008

APOD - Ahora en castellano!

clipped from observatorio.info
Observatorio

La Nebulosa del Capullo desde CFHT


La Nebulosa del Capullo desde CFHT
Imagen del día 14 de Enero de 2008 traducida por Ricardo Cárdenes

¿Qué provoca los colores de la Nebulosa del Capullo?

La Nebulosa del Capullo, catalogada como IC 5146, es una nebulosa particularmente hermosa situada a unos 4.000 años luz de distancia hacia la constelación del Cisne (Cygnus ).

Dentro de la Nebulosa del Capullo se encuentra un cúmulo abierto de estrellas de creación reciente.

Al igual que otras incubadoras estelares, la Nebulosa del Capullo contiene al mismo tiempo una brillante nebulosa de emisión roja, nebulosas de reflexión azules y nebulosas de absorción de un rojo oscuro.

Mediante diferentes mezclas, estos tres procesos crean la gama de colores de la imagen de arriba tomada recientemente por el Telescopio Canadá-Francia-Hawaii (CFHT) situado en Hawaii, EEUU.

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CHINA vs USA or USA vs CHINA

clipped from www.theatlantic.com

The Chinese are subsidizing the American way of life. Are we playing them for suckers—or are they playing us?


by James Fallows

The $1.4 Trillion Question

S

tephen Schwarzman may think he has image problems in America. He is the co-founder and CEO of the Blackstone Group, and he threw himself a $3 million party for his 60th birthday last spring, shortly before making many hundreds of millions of dollars in his company’s IPO and finding clever ways to avoid paying taxes. That’s nothing compared with the way he looks in China. Here, he and his company are surprisingly well known, thanks to blogs, newspapers, and talk-show references. In America, Schwarzman’s perceived offense is greed—a sin we readily forgive and forget. In China, the suspicion is that he has somehow hoodwinked ordinary Chinese people out of their hard-earned cash.

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