The breakthrough in this work: Smith's metamaterial device is the first to handle a very wide range of wavelengths, a necessity for Harry Potter — level invisibility. (discovermagazine.com)
One key to their success was designing a photonic crystal that works for a very wide range of wavelengths and angles. (sciencedaily.com)
[2] Next to Hubble, ESO's Very Large Telescope, ESO's New Technology Telescope, ESO's VLT Survey Telescope, the MPG / ESO 2.2 - metre telescope, the Atacama Large Millimeter / submillimeter Array, the Visible and Infrared Survey Telescope for Astronomy, the Rapid Eye Mount (REM) telescope, the Swope Telescope, the LCO.4 - meter telescope, the American DECcam, and the Pan-STAARS survey all helped to identify and observe the event and its after - effects over a wide range of wavelengths. (sciencedaily.com)