News tagged with wavelength of light

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Scientists engineer novel DNA barcode

Much like the checkout clerk uses a machine that scans the barcodes on packages to identify what customers bought at the store, scientists use powerful microscopes and their own kinds of barcodes to help ...

Sep 24, 2012
5 / 5 (3) 0 | with audio podcast

Deep-sea crabs grab grub using UV vision

(Phys.org)—Crabs living half-a-mile down in the ocean, beyond the reach of sunlight, have a sort of color vision combining sensitivity to blue and ultraviolet light. Their detection of shorter wavelengths ...

Sep 06, 2012
5 / 5 (2) 1 | with audio podcast

Mercury's many colors

Although composited from expanded wavelengths of light, this wide-angle image from NASA’s MESSENGER spacecraft shows the amazing variation of colors and tones to be found on Mercury’s Sun-scoured ...

Jul 27, 2012
5 / 5 (5) 0

Feel-good glass for windows

Daylight acts on our body clock and stimulates the brain. German researchers have made use of this knowledge and worked with industry partners to develop a coating for panes of glass that lets through more light. Above all, ...

Jul 03, 2012
5 / 5 (1) 1

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

Algal proteins light the way

Channelrhodopsins (ChRs) are remarkable proteins that respond to specific wavelengths of light by allowing ions to cross the cell membrane, a mechanism that makes them useful for manipulating ion-driven processes ...

Jun 08, 2012
5 / 5 (1) 0

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 | with audio podcast