JERUSALEM, April 29 (Xinhua) -- Israeli researchers precisely measured ultra-powerful laser pulses that last only a few femtoseconds -- millionths of a billionth of a second, Ben-Gurion University ...

KUNMING, April 29 (Xinhua) -- Chinese scientists have achieved satellite laser ranging in the Earth-moon space in daytime for the first time in the world, despite the strong daylight interference, ...

Vidgo launched its official streaming service a few years ago, working its way up to compete with big names like DIRECTV and Hulu thanks to its lengthy channel list, Spanish network offerings ...

Correspondence to Dr Wei-Chi Wu, Department of Ophthalmology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan; weichi666{at}gmail.com Aims To construct a program to predict the visual acuity (VA), ...