Why did they form at that time? Astronomers know from observing distant exploding stars that the size of the universe has ...

For more than 30 years, physicists have wrestled with gallium’s structure in the liquid state. Now, fresh simulations offer ...

Photonic crystals are periodic optical structures that can control the flow of light. Multiple reflections from surfaces separated by a distance similar to the wavelength prevent an optical beam ...

Abstract: A very high gain of 51 dB in a single Er-doped fiber is reported. A significant amount of amplified Rayleigh backscattering is also observed. This is predicted to impose an upper limit of 57 ...

Please Note: All times UK. Tables are subject to change. The BBC is not responsible for any changes that may be made. Copyright © 2025 BBC. The BBC is not ...

Please Note: All times UK. Tables are subject to change. The BBC is not responsible for any changes that may be made. Copyright © 2025 BBC. The BBC is not ...