A company called Reflect Orbital wants to illuminate the Earth after sunset with orbital sky mirrors, raising alarm bells.

Photoelectric sensors and light curtain sensors are among the most commonly used sensing devices in factories. Photoelectric ...

Given the name, you’d expect this to be a decent grand tourer, and Audi reckons on 386 miles of range for the base quattro, ...

Venus has been stealing the twilight show, glowing so fiercely that it can look like a misplaced aircraft or a distant beacon hanging over the horizon. Its current brilliance is not a cosmic accident ...

If snow's falling or on the way, check out these essential tips for your best-ever snow shots! The post Get stunning snow shots this holiday season – whether you use a camera or an iPhone appeared ...

Abstract: An ice crystal has uniaxial symmetry about its c axis and is therefore electrically anisotropic. Anisotropy in the real dielectric permittivity at radio wavelengths means that ice is ...

Abstract: A simple method of measurement of ruby laser outputs by reflecting the laser light in a BaSO 4 diffuse reflector and measuring the diffused light in a photocell is presented. Experimental ...

Correspondence to: Dr Mark Bastin Medical and Radiological Sciences (Medical Physics), University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK; mebskull.dcn.ed.ac.uk ...

A comprehensive physical examination must be conducted to assess the lymph nodes (including Waldeyer’s ring), examine the size of the liver and spleen, screen for a family history of lymphomas, and ...