
Random laser feels the heat
The spectrum of light from a new laser can be tuned by adjusting its temperature
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The spectrum of light from a new laser can be tuned by adjusting its temperature
The complex spin of a sun-like star lends weight to astronomical theories
A nearby white dwarf behaving as a lens could help to explain the nature of dark matter
A new semiconductor uses visible light to extract 'clean' hydrogen fuel from water
Avalanche defence and ski safety could benefit from the discovery of a new structural feature in packed snow
For many years atomic-collision experiments basically involved measuring the deflection of fast projectiles that had passed through gaseous targets, or measuring the amount of light given off by atoms and molecules as they were bombarded with different projectiles. In recent years, however, the atomic-physics community has aspired to much more: we want to prepare a […]
The Marconi story (see article) has featured a cast of interesting characters. Marconi himself was a larger-than-life scion of a wealthy Irish-Italian family, an energetic mix of entrepreneur, inventor and playboy. Until the mid-1990s the Marconi legacy was maintained by GEC, which was Britain’s largest manufacturing company, with interests ranging from defence to medical electronics. […]
During the last century great strides were made in understanding the structure of the universe and the overall processes that drive its evolution. The utter vastness of the cosmos became apparent following the discovery that although our own galaxy is gigantic, it is just one of many billions of galaxies scattered throughout the universe. The […]
This review first appeared in the news section of PhysicsWeb on 8 November. It is said that one of the world’s most eminent quantum-gravity theorists was once asked to explain in his institution’s annual report what he did. He declined, claiming that his work was far too complicated for the general public to understand. All […]
A lack of formal education, high-powered family connections and an unstoppable will to succeed helped Guglielmo Marconi to transmit the first radio signal across the Atlantic and launch the wireless-communications industry