Olimpíada Internacional de Matemática

Hola Rapaces,

Os días 16-24 xulio celebrouse o IMO 2011 en Amsterdam. Páxina web.
Un veciño noso, Pablo Boixeda , obtivo a medalla de bronce.
Como sudoku veraniego aquí tendes un link os problemas que tiveron que resolver os rapaces.
Como bonus tamén vos podedes baixar os problemas dos outros anos.

Gonzalo.

Desafios Matematicos

Hola rapaces,

dende fai unhas semanas na páxina web de El Pais para celebrar o centenario da Real Sociedade Matemática Española, diversos matemáticos de toda España plantexan diferentes desafíos matemáticos cada semana, para resolvelo tamén temos unha semana!.
O premio é unha coleccion de libros de matematicas (of course!)
Os problemas son moi entretenidos, o desta semana chámase, "Cuadrados que suman grandes cifras"

Aqui tendes a lista de tódolos desafíos: Desafios matemáticos.

Gonzalo.

Lytro camera: Shoot first, focus later

A new camera may be able to make even the foggiest of photos turn out sharp and full of life. The Lytro camera launched Tuesday and has a post-focus feature, letting you adjust the depth of the photo after you’ve taken it.

Picture gallery

The antineutrino vanishes differently

Researchers report a possible difference between muon neutrino and muon antineutrino disappearance, which if confirmed will have serious implications for our current theoretical understanding.

CPT symmetry, the combination of charge conjugation, parity inversion, and time reversal, is a fundamental symmetry of particle and nuclear physics and is considered sacred. It is conserved in field theories that explain the strong, weak, and electromagnetic interactions. In the lepton sector, CPT symmetry requires that muon neutrino disappearance oscillations be identical to muon antineutrino disappearance oscillations in vacuum. A test of CPT symmetry was recently performed by the MINOS experiment at Fermilab, which, due to its magnetic field, is the first experiment to distinguish μ^- and μ⁺ tracks and separately measure the disappearance of muon neutrinos and muon antineutrinos [1]. (Previous experiments have measured a mixture of neutrino and antineutrino oscillations.) Remarkably, as reported in Physical Review Letters, MINOS appears to observe a difference between muon neutrino and muon antineutrino disappearance [1].

Verificando a teoría atómica cun experimento caseiro

Con unha simple caixa de cartón e un CD podemos verificar experimentalmente que o mundo está feito de átomos e que se rixen polas reglas da mecánica cuántica!
O experimento e a sua explicación teórica están perfectamente ilustrados neste blog:
Ciencia explicada