For the first time, scientists have demonstrated that negative refraction can be achieved using atomic arrays - without the need for artificially manufactured metamaterials. Scientists have long ...

It’s all to do with the raindrops, says one reader, with them needing to be relatively uniform in size and well separated for ...

Horiba has developed a particle size distribution measuring device that accurately measures particle size distribution even in the presence of similar-shaped particles. The device uses image ...

Seventeen Czech weather stations recorded record lows as autumn brought its first frost — and a stunning halo appeared in the sky near Veverka, Třebíč region.