Tesla believes scrubbing the dirt and letting the glass dry takes unproductive time and using chemicals may damage the surface.
04 Dec 2019 8:06 AM
Scientists have created contact lenses that let you shoot lasers from your eyes.
02 May 2018 6:02 PM
The Physikalisch-Technische Bundesanstalt has developed a laser with a linewidth of only 10 mHz.
02 Jul 2017 9:17 AM