News tagged with electromagnetism

Detective work using terahertz radiation

Damaging biocides can be detected on old wooden sculptures, hidden wall paintings can be made visible again and the layered structures of pieces of art analyzed. Using terahertz scanners restorers will soon ...

Nov 21, 2012
5 / 5 (1) 0

One size cloaks all

A metamaterial invisibility cloak that can adapt to hide different sized objects is demonstrated by in Nature Communications this week. The findings represent a useful advance for more practical applications of metamaterial cloaki ...

Nov 21, 2012
5 / 5 (4) 0

New energy technologies promise brighter future

In three studies published in the current issue of Technology and Innovation – Proceedings of the National Academy of Inventors, innovators unveil creative technologies that could change our sources of energy, change our use of energy ...

Nov 19, 2012
5 / 5 (1) 1

Hubble traps galactic fireflies

(Phys.org)—Luminous galaxies glow like fireflies on a dark night in this image snapped by the NASA/ESA Hubble Space Telescope. The upper central galaxy in this image is a gigantic elliptical galaxy designated ...

Nov 18, 2012
5 / 5 (6) 7 | with audio podcast

Making a better invisibility cloak

The first functional "cloaking" device reported by Duke University electrical engineers in 2006 worked like a charm, but it wasn't perfect. Now a member of that laboratory has developed a new design that ...

Nov 11, 2012
4.5 / 5 (17) 3 | with audio podcast