News tagged with electromagnetic radiation

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Electrified graphene a shutter for light

(Phys.org) -- An applied electric voltage can prompt a centimeter-square slice of graphene to change and control the transmission of electromagnetic radiation with wavelengths from the terahertz to the midinfrared.

Jun 15, 2012
5 / 5 (4) 1 | with audio podcast

Light particles illuminate the vacuum

Researchers from the Finnish Aalto University and the Technical Research Centre of Finland succeeded in showing experimentally that vacuum has properties not previously observed. According to the laws of ...

Feb 26, 2013
4.8 / 5 (35) 415 | with audio podcast