X-ray lasers: Why does brighter mean darker?
When we illuminate something, we usually expect that the brighter the source we use, the brighter the resulting image will be. This rule also works for ultra-short pulses of laser light—but only up to a certain intensity. The answer to the question.....»»
Study finds why baby leatherback marine turtles can"t "see the sea"
When sea turtle hatchlings emerge from their nests, typically at night, they crawl toward the ocean in what is known as "seafinding." They have to discriminate between the brighter seaward versus a dimmer landward horizon and then move toward the sou.....»»
NASA"s InSight still hunting marsquakes as power levels diminish
Dusty solar panels and darker skies are expected to bring the Mars lander mission to a close around the end of this year......»»
Chris Hemsworth crosses moral lines in Spiderhead trailer
The star of Marvel's Thor movies, Chris Hemsworth, takes on a darker role as a scientist experimenting on prisoners in Netflix's new thriller Spiderhead......»»
A tug of war between survival and fitness: How chameleons become even brighter without predators around
Invasive species offer a rare research opportunity, as they often colonize new environments very different to their native habitat. One such species is the Jackson's three-horned chameleon (Triocerus j. xantholophus), which was accidentally introduce.....»»
After losing contact with its helicopter, NASA put the entire Mars mission on hold
Mars is only going to get colder and darker for the next 10 weeks as winter deepens. Enlarge / NASA's Mars Ingenuity helicopter has been flying across the red planet for more than a year. (credit: NASA) The achievement of powe.....»»
Scientists invent topological-cavity surface-emitting laser
Semiconductor lasers are the most widely used lasers due to their compact size, high efficiency, low cost and wide spectra. But they suffer low output power and low beam quality—two specifications difficult to improve simultaneously. For example, a.....»»
Victorian medicine shaped modern concepts of race
Charles Darwin raised the question of whether darker skin is correlated with immunity to certain diseases in his 1871 book "The Descent of Man," an erroneous claim that reflected beliefs about the reality and fixity of race that were widespread in th.....»»
Sony brings laser power, native 4K to every 2022 projector
Sony has added lasers to its full range of projectors while bringing the price of native 4K resolution to a new level of affordability......»»
Atomic terahertz-vibrations solve the enigma of ultrashort soliton molecules
Stable packets of light waves—called optical solitons—are emitted in ultrashort-pulse lasers as a chain of light flashes. These solitons often combine into pairs with very short temporal separation. Introducing atomic vibrations in the terahertz.....»»
A luminescent material that shines brighter when stretched or electrified
Scientists at Daegu Gyeongbuk Institute of Science and Technology (DGIST) in Korea have fabricated a flexible material that lights up brightly when stretched and/or when an electric field is applied. The results were published in the journal Applied.....»»
Fabricating complex hierarchical biomimetic patterns with lasers
A new publication from Opto-Electronic Advances reviews fabricating complex hierarchical biomimetic patterns with the use of novel spatiotemporally tailored interfering laser beams......»»
The dark web’s biggest marketplace just got taken down
The dark web just got a little less darker: The biggest dark web marketplace in the world, Hydra, has been taken offline......»»
Hubble Sees Most Distant Star Ever, 28 Billion Light-Years Away
The Hubble Space Telescope has glimpsed the most distant single star it's ever observed, glimmering 28 billion light-years away. And the star could be between 50 to 500 times more massive than our sun, and millions of times brighter. From a report: I.....»»
The most influential women in tech history
With their big ideas and clever inventions, these inspirational women left an indelible mark on the world and set us on a path to a brighter future......»»
Satellites" lasers reveal changes in Earth"s water movement
Understanding climate change and its effects on humans, animals, and natural spaces requires studying Earth as a whole, interconnected system. Water movement on Earth, in particular, is a process that affects everything from global climate to the sma.....»»
Men think they"re brighter than they are and women underestimate their IQ. Why?
When asked to estimate their own intelligence, most people will say they are above average, even though this is a statistical improbability. This is a normal, healthy cognitive bias and extends to any socially desirable trait such as honesty, driving.....»»
Scientists reconsider the meaning, implications of drought in light of a changing world
Maps of the American West have featured ever darker shades of red over the past two decades. The colors illustrate the unprecedented drought blighting the region......»»
Ukraine invasion stops half the world"s neon production, possibly worsening the chip crisis
Around half of the world's supply of neon—needed for the lasers used in chip manufacturing—comes from two companies in Ukraine. Reuters reports that both have ceased production since the beginning of the Russian invasion. Market research from Tec.....»»
High-power laser being constructed for a new experimental facility
Lawrence Livermore National Laboratory's decades of leadership in developing high-energy lasers is being tapped to provide a key component of a major upgrade to SLAC National Accelerator Laboratory's Linac Coherent Light Source (LCLS)......»»
Using pump lasers to create plasma lenses that focus at very high intensity levels
A team of researchers from Lawrence Livermore National Laboratory, the University of California at Berkeley and Princeton University has developed plasma-based techniques to build a lens for laser beams with petawatt-scale power. In their paper publi.....»»