sábado, 8 de octubre de 2011

STEVE JOBS

Steve Jobs (1955-2011) was born in california and he was forsaken by his parents. He started university in Reed College, but he dindn't finished because of the high price of the school. After two years, he started working for a videogame company, where he met Steve Wozniak. In 1976, he created the first apple with Wozniak in the garage of his house. Ten years later, apple was in the stock exchange and Steve was the youngest millionaire of the world. In 1986 apple suffers a recession an Steve contracts Jhon Sculley. Sculley and Steve don't get on very well, and in 1985, Steve is fired from apple and he sells all the actions he had except one. In 1996 he bought Pixar and he makes another succes. Quickly he becames one of the biggest accionists in Disney. In 1997 apple was near to the bankrupt and Steve was readmised. He tried to make computers which were easy to use and wich could do as much as possible. In 1994 he was diagnostified a cancer of pancreas, but , at first, he didn't considered it important. In the last years he created new Ipods, Iphones, Ipads and the Icloud. He died the 5th October 2011 because of his cancer.


jueves, 6 de octubre de 2011

Nobel de física 2011

Este año el nobel de física ha sido para Saul Perlmutter, Brian Schmidt y Adam Riess por sus observaciones de supernovas del tipo 1a que han permitido descubrir que el universo está acelerando su expansión.
Las supernovas tienen un brillo constante, pero se observó que había algunas que brillaban menos de lo esperado en relación a su velocidad, lo cual indicaba que estaban más lejos de lo previsto.

Aún no se han concretado las causas de esta aceleración, pero se supone que hay una materia oscura "antigravitacional" y que habría que introducir una constante contraria a la que introdujo Einstein para hacer el universo estable.



EXPLOSIÓN DE SUPERNOVA TIPO 1A