News tagged with black light


Blue bananas

Blue bananas: Ripening bananas glow an intense blue under black light

Chemistry /

created Oct 17, 2008 | popularity 3.8 / 5 (37) | comments 8

(PhysOrg.com) -- Ripe bananas are of course yellow. However, under black light, the yellow bananas are bright blue, as discovered by scientists at the University of Innsbruck (Austria) and Columbia University ...





Search results for black light


Silicon technology offers extended X-ray vision of high-energy cosmos

Silicon technology offers extended X-ray vision of high-energy cosmos

Space & Earth / Space Exploration

created Dec 21, 2009 | popularity 5 / 5 (3) | comments 1

(PhysOrg.com) -- As elements of the integrated circuits running our computers, phones and electronics, silicon wafers are everywhere. An ESA-led effort is establishing an out-of-this-world use for these ...


Studying how black holes grow

Studying how black holes grow

Space & Earth / Space Exploration

created Dec 17, 2009 | popularity 5 / 5 (2) | comments 1

Black holes are some of the most exotic objects in the universe. They are the final evolutionary stage of giant stars much larger than the sun. When these stars explode, their cores collapse down to the size ...


NASA NuSTAR Telescope Being Built at Nevis

NASA NuSTAR Telescope Being Built at Nevis

Space & Earth / Space Exploration

created Dec 17, 2009 | popularity 5 / 5 (4) | comments 0

(PhysOrg.com) -- It's an unlikely place to build a NASA telescope: a leafy estate in Irvington, N.Y., that once belonged to the son of Alexander Hamilton. Inside a hangar-like building on the site, which is ...


Black Holes in Star Clusters stir up Time and Space

Black Holes in Star Clusters stir up Time and Space (w/ Video)

Space & Earth / Astronomy

created Dec 16, 2009 | popularity 4.8 / 5 (16) | comments 6

(PhysOrg.com) -- Within a decade scientists could be able to detect the merger of tens of pairs of black holes every year, according to a team of astronomers at the University of Bonn’s Argelander-Institut ...


Close-up photos of dying star show our sun's fate

Close-up photos of dying star show our sun's fate (w/ Video)

Space & Earth / Astronomy

created Dec 15, 2009 | popularity 5 / 5 (21) | comments 5

(PhysOrg.com) -- About 550 light-years from Earth, a star like our Sun is writhing in its death throes. Chi Cygni has swollen in size to become a red giant star so large that it would swallow every planet ...


Theorists propose a new way to shine -- and a new kind of star

Physics / General Physics

created Dec 14, 2009 | popularity 4.5 / 5 (12) | comments 4

Dying, for stars, has just gotten more complicated. For some stellar objects, the final phase before or instead of collapsing into a black hole may be what a group of physicists is calling an electroweak star.


Computing with a wave of the hand

Computing with a wave of the hand (w/ Video)

Technology / Hi Tech

created Dec 11, 2009 | popularity 4.9 / 5 (14) | comments 7

(PhysOrg.com) -- The iPhone’s familiar touch screen display uses capacitive sensing, where the proximity of a finger disrupts the electrical connection between sensors in the screen. A competing approach, ...


Scientists observe super-massive black holes using Keck Observatory in Hawaii

Scientists observe super-massive black holes using Keck Observatory in Hawaii

Space & Earth / Astronomy

created Dec 10, 2009 | popularity 5 / 5 (8) | comments 3

An international team of scientists has observed four super-massive black holes at the center of galaxies, which may provide new information on how these central black hole systems operate. Their findings ...


Galaxy Collision Switches on Black Hole

Galaxy Collision Switches on Black Hole

Space & Earth / Astronomy

created Dec 10, 2009 | popularity 4.5 / 5 (4) | comments 1

(PhysOrg.com) -- This composite image of data from three different telescopes shows an ongoing collision between two galaxies, NGC 6872 and IC 4970.


Suzaku catches retreat of a black hole's disk

Suzaku catches retreat of a black hole's disk

Space & Earth / Astronomy

created Dec 10, 2009 | popularity 4.5 / 5 (16) | comments 2

(PhysOrg.com) -- Studies of one of the galaxy's most active black-hole binaries reveal a dramatic change that will help scientists better understand how these systems expel fast-moving particle jets.



List of search results for black light