News tagged with wavelength of light

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Sun-free photovoltaics

A new photovoltaic energy-conversion system developed at MIT can be powered solely by heat, generating electricity with no sunlight at all. While the principle involved is not new, a novel way of engineering ...

Jul 29, 2011
4.9 / 5 (11) 6

ALMA turns its eyes to Centaurus A

(Phys.org) -- A new image of the galaxy Centaurus A, made with the Atacama Large Millimeter/submillimeter Array (ALMA), shows how the observatory allows astronomers to see through the opaque dust lanes that ...

May 31, 2012
4.9 / 5 (10) 0

Astronomers discover cool stars in nearby space

(PhysOrg.com) -- An international team, led by astronomers at the University of Hertfordshire have discovered what may be the coolest sub-stellar body ever found outside our own solar system. Using the United ...

Jan 29, 2010
4.4 / 5 (11) 6

Nanodust particles in the interplanetary medium

Dust particles smaller than about a wavelength of light are abundant in our solar system, created by collisions between asteroids and from the evaporation of comets. As they scatter sunlight, these particles ...

Mar 09, 2015
5 / 5 (9) 4

Small distant galaxies host supermassive black holes

(PhysOrg.com) -- 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 ...

Sep 15, 2011
4.2 / 5 (10) 28