The Electron

Melvyn Bragg and guests discuss the evolution of lungs and of the first breaths, which can be traced back 400 million years to when animal life spread from rock pools and swamps onto land, as some fish found an evolutionary advantage in getting their oxygen from air rather than w ...  عرض المزيد

Melvyn Bragg and guests discuss the decisive role of one of the great 20th Century physicists in solving the question of nuclear fission. It is said that Meitner (1878-1968) made this breakthrough over Christmas 1938 while she was sitting on a log in Sweden during a snowy walk wi ...  عرض المزيد

Melvyn Bragg and guests discuss the decisive role of one of the great 20th Century physicists in solving the question of nuclear fission. It is said that Meitner (1878-1968) made this breakthrough over Christmas 1938 while she was sitting on a log in Sweden during a snowy walk wi ...  عرض المزيد

Rediffusion La physique quantique est la branche de la physique qui étudie les phénomènes à l'échelle des atomes et des particules subatomiques. Voici les points essentiels à connaître :Nature des ParticulesEn physique quantique, les particules comme les électrons et les photons ...  عرض المزيد

Imaginez un univers où tout ce que nous voyons — les étoiles, les planètes, les objets autour de nous — est fait de minuscules particules appelées électrons. Ces électrons sont des composants essentiels de la matière, et ils ont tous des propriétés identiques : même charge éle ...

In this episode, Jamie explains the charges of sub-atomic particles — protons, neutrons, and electrons — and their role in making atoms neutral.

Discover how these charges balance in atoms, with protons and electrons contributing positive and negative charges, respecti ...