Dirac and antimatter

12 September, 2017 Antonio J. Durán0

The existence of antimatter was conjectured by the English physicist and mathematician Paul Dirac (1902-1984), before any physical experiment had even hinted that such a rare thing would be living with us in the universe. […]

A planet between Mars and Jupiter?

16 January, 2017 Antonio J. Durán0

William Herschel’s discovery of the planet Uranus in 1781 strengthened a rule of thumb proposed shortly before, called the Titius-Bode law, which was intended to determine the distance of the planets from the Sun—even if […]

Epidemics

3 November, 2016 Enrique Fernández-Cara1

What is an epidemic? The term epidemic (from the Greek epi, over, and demos, people) describes a situation caused by a disease that affects more people than expected over a period of time. Throughout History, […]