Angel "Java" Lopez en Blog

Publicado el 14 de Noviembre, 2015, 18:11

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Ya estamos cerca del descubrimiento que confirma las ideas de Weyl y Oppenheimer:

It needed some years of development by the experimenters before the fact of the existence of positrons was established. Blackett was really the first to obtain hard evidence for the existence of a positron but he was afraid to publish it. He wanted confirmation, he was really over-cautious. It was left to Anderson to first publish the evidence for the existence of a positron and to scoop the credit for the discovery of the positron.

No conocía el trabajo de Blackett. Gracias a su descubrimiento, Anderson ganó el Premio Nobel en 1936. Blackett igual ganó el Nobel más tarde, en 1948, por sus trabajos con la cámara de niebla y los rayos cósmicos. Fue en las primeras de esas investigaciones donde detectó la existencia de positrones, con espirales de a pares con las de los electrones.

Comenta Dirac sobre la situación:

When one thinks back to these days, one finds that is really remarkable how unwilling people were to postulate a new particle. This applies both the theoretical and experimental workers. It seems that they would look for any explanation rather than postulate a new particle. It needed the most obvious and unassailable evidence to be presented before them they were reluctantly forced to postulate a new particle. The climate has completely changed since those early days. New particles are now being postulated and proposed continually, in large numbers. There are a hundred or more in current use today. People are only too keen to publish evidence for a new particle, whether this evidence comes from experiment or from some ill-established theoretical idea.

Creo que fue Fermi quien dijo "si hubiera sabido de la existencia de tantas partículas, me hubiera dedicado a la botánica". Es curioso como Dirac se refiere a "ill-established theoretical idea", siendo él mismo un gran físico teórico. Algo no le gustaba de esos días en el desarrollo de las teorías.

It was a very difficult first step to accept the positron. That was followed closely by the discovery of the neutron, confirming Rutherford's hypothesis of several years earlier, and afterwards the neutrino and various mesons were discovered.

Ya falta poco para terminar este comentario rápido de la conferencia de Dirac.

Nos leemos!

Angel "Java" Lopez
http://www.ajlopez.com
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Por ajlopez, en: Ciencia