News tagged with wavelength of light

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Electrified graphene a shutter for light

( -- 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.

dateJun 15, 2012 in Nanophysics
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Small distant galaxies host supermassive black holes

( -- Using the Hubble Space Telescope to probe the distant universe, astronomers have found supermassive black holes growing in surprisingly small galaxies. The findings suggest that central black holes formed ...

dateSep 15, 2011 in Astronomy
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