Skip to main content

Home/ SciByte/ Group items tagged scibyte25

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle
Mars Base

Physicists to Make Major 'God Particle' Announcement Next Week | Higgs Boson & Particle... - 0 views

www.space.com/article-announcement-week.html

scibyte25 HiggsBoson

shared by Mars Base on 09 Dec 11 - No Cached
  • cautioned that LHC's ATLAS and CMS experiments have not accrued enough data to make any conclusive statement on the existence or non-existence of the Higgs boson, an as yet undetected particle thought to give all other particles their mass
  • particle is thought to have a mass of between 114 and 185 gigaelectronvolts, or GeVs. (One GeV is equivalent to the mass of a proton, the positively charged particle in the nucleus of an atom
  • Tantalizing data spikes between 120 and 140 GeV suggest that the Higgs mass might lie in that range, the LHC teams reported in July
  • ...1 more annotation...
  • the data at that stage was not reliable enough to make any scientific claims
Mars Base

Superhard carbon material could crack diamond - 0 views

www.physorg.com/...d-carbon-material-diamond.html

scibyte25

shared by Mars Base on 09 Dec 11 - No Cached
  • By applying extreme pressure to compress and flatten carbon nanotubes, scientists have discovered that they can create a new carbon polymer that simulations show is hard enough to crack diamond
  • directly compressing carbon nanotube bundles to design and to synthesize novel metastable carbon allotropes
  • applying pressure to some of these carbon allotropes can change the bonds, resulting in different forms of carbon with novel electronic and mechanical properties
  • ...1 more annotation...
  • the scientists here used a recently developed technique called the Crystal Structure Analysis by Particle Swarm Optimization
Mars Base

UIUC team will show can't-tell photo inserts at Siggraph (w/ video) - 0 views

www.physorg.com/...m-cant-tell-photo-inserts.html

scibyte25

shared by Mars Base on 09 Dec 11 - No Cached
  • Humans can quickly detect photo fraud, maintains Karsch. They can do so in spotting lighting inconsistencies in a doctored photograph
  • In their computer program, a user is asked to select light sources in the picture.
  • An algorithm recreates the 3-D geometry and lighting of the scene and the artificial object is inserted into its new environment
  • ...4 more annotations...
  • The program adds shadows and highlights to the object before converting it back to 2-D.
  • The team set out to extract the 3-D scene information from single images, to allow for seamless object insertion, removal, and relocation
  • involves three phases
  • luminaire inference, perspective estimation (depth, occlusion, camera parameters), and texture replacement
Mars Base

Hubble Space Telescope Passes Major Science Milestone | Hubble 10,000th Science Paper |... - 0 views

www.space.com/cope-10000-science-papers.html

scibyte25

shared by Mars Base on 09 Dec 11 - No Cached
  • Hubble Space Telescope has crossed a major milestone, accumulating 10,000 science papers based on its observations
  • After 21 years
  • it's actually in the best shape of its life
  • ...14 more annotations...
  • last space shuttle servicing mission was in May 2009.
  • Papers describing discoveries in nearly every field of astronomy and cosmology have been published based on data gathered by the Hubble Space Telescope.
  • conducted by scientists in more than 35 countries
  • most papers written by researchers in the United States, the United Kingdom, Germany, Italy, France, and Spain
  • Hubble's top five most referenced papers are on
  • The search for distant supernovas used to characterize dark energy
  • The precise measurement of the universe's rate of expansion
  • The apparent link between galaxy mass and central black hole mass
  • Early galaxy formation in the Hubble Deep Field
  • The evolutionary models for low-mass stars and brown dwarfs
  • 10,000th Hubble science paper
  • announces the discovery of the faintest supernova ever associated with a cosmic explosion called a long-duration gamma-ray burst, which spews high-energy radiation into space when a star dies
  • The first science paper based on Hubble data came about six months after the telescope's launch
  • a paper on observations of the center of galaxy NGC 7457, where scientists suspected a huge black hole lurked
Mars Base

LHC to narrow search for Higgs boson - 0 views

www.physorg.com/...12-lhc-narrow-higgs-boson.html

scibyte25 HiggsBoson

shared by Mars Base on 09 Dec 11 - No Cached
  • Finding it would be an enormous scientific breakthrough for the physics world and would help explain why different particles have different masses
  • That is because the particle itself is thought to give mass to other particles
  • any firm discovery will have to wait until next year
  • ...3 more annotations...
  • we're close to the stage where we're going to see something
  • The hunt for the Higgs boson is different than the much-publicized research by French and Italian researchers that appeared to show subatomic neutrino particles traveling faster than light
  • But scientists at CERN are involved in testing that research
Mars Base

Learning high-performance tasks with no conscious effort may soon be possible (w/ video) - 0 views

medicalxpress.com/...ks-conscious-effort-video.html

scibyte25

shared by Mars Base on 09 Dec 11 - No Cached
  • New research published today in the journal Science suggests it may be possible to use brain technology to learn to play a piano, reduce mental stress or hit a curve ball with little or no conscious effort
  • Japan, recently demonstrated that through a person's visual cortex, researchers could use decoded functional magnetic resonance imaging (fMRI) to induce brain activity patterns to match a previously known target state and thereby improve performance on visual tasks
  • Think of a person watching a computer screen and
  • ...11 more annotations...
  • brain patterns modified to match those of a high-performing athlete
  • or modified to recuperate from an accident or disease
  • pictures gradually build up inside a person's brain, appearing first as lines, edges, shapes, colors and motion in early visual areas
  • The brain then fills in greater detail
  • none of these studies directly addressed the question of whether early visual areas are sufficiently plastic to cause visual perceptual learning
  • Until now.
  • implemented a method using decoded fMRI neurofeedback to induce a particular activation pattern in targeted early visual areas that corresponded to a pattern evoked by a specific visual feature in a brain region of interest
  • is a novel learning approach sufficient to cause long-lasting improvement in tasks that require visual performance
  • the approached worked even when test subjects were not aware of what they were learning
  • the decoded neurofeedback method might be used for various types of learning, including memory, motor and rehabilitation
  • this study we confirmed the validity of our method only in visual perceptual learning
Mars Base

Saturday's Lunar Eclipse Will Include 'Impossible' Sight | Fox News - 0 views

www.foxnews.com/...-will-include-impossible-sight

scibyte25

shared by Mars Base on 09 Dec 11 - No Cached
  • This year's second total lunar eclipse on Saturday, Dec. 10, will offer a rare chance to see a strange celestial sight traditionally thought impossible
  • For most places in the United States and Canada, there will be a chance to observe an unusual effect
  • one that celestial geometry seems to dictate can't happen
  • ...11 more annotations...
  • "selenelion" (or "selenehelion") and occurs when both the sun and the eclipsed moon can be seen at the same time.
  • When we have a lunar eclipse, the sun, Earth and moon are in a geometrically straight line in space, with the Earth in the middle.
  • during a lunar eclipse, the sun and moon are exactly 180 degrees apart in the sky
  • atmospheric refraction that makes a selenelion possible
  • Atmospheric refraction causes astronomical objects to appear higher in the sky than they are in reality
  • when you see the sun sitting on the horizon, it is not there really. It's actually below the edge of the horizon, but our atmosphere acts like a lens and bends the sun's image just above the horizon, allowing us to see it.
  • we end up seeing the sun for a few minutes in the morning before it has actually risen and for a few extra minutes in the evening after it actually already has set. 
  • The same holds true with the moon, as well.
  • for many localities there will be an unusual chance to observe a senelion firsthand with Saturday morning's shadowy event
  • There will be a short window of roughly 1-to-6 minutes (depending on your location) when you may be able to simultaneously spot the sun rising in the east-southeast and the eclipsed full moon setting in the west-northwest
  • east of the Appalachian Range, this will, unfortunately, be a non-event
Mars Base

North America's Biggest Dinosaur Unearthed In New Mexico | Fox News - 1 views

www.foxnews.com/...nosaur-unearthed-in-new-mexico

scibyte25

shared by Mars Base on 09 Dec 11 - No Cached
  • North America's biggest dinosaur has been unearthed
  • it once called New Mexico home.
  • titanosaurus was documented in a recent issue of Acta Palaeontologica Polonica published on Dec. 6.
  • ...11 more annotations...
  • Alamosaurus sanjuanensis
  • A cousin of the Diplodocus
  • stumbled upon the bones during a dig in the New Mexico desert back in 2004
  • after the full bone had been freed, Fowler said the trip back to the truck was the hardest part of the entire process
  • There was only two of us out there, and it was about 1.2 miles
  • Alamosaurus vertebra that Fowler and Sullivan found puts the dinosaur in the same category as other Titanosaurus sauropods discovered in South America
  • Argentinosaurus and the Puertasaurus which both could weigh up to 80 – 100 metric tons
  • the Alamosaurus they discovered could potentially be the same size.
  • new questions have emerged as to the behavior of sauropods in North America
  • These dinosaurs are found primarily in the south, only getting as far north as Utah, leading Fowler and other researchers to wonder about their preferred environment
  • Perhaps they actually emigrated in from South America during this time, and maybe they just haven’t got as far north quite yet
Mars Base

Video: How Parrots Talk - ScienceNOW - 0 views

news.sciencemag.org/...enceshot-how-parrots-talk.html

scibyte25

shared by Mars Base on 09 Dec 11 - No Cached
  • Parrots have neither lips nor teeth, but that doesn't stop them from producing dead-on imitations of human speech
  • like humans, parrots use their tongues to form sounds
  • scientists took x-ray movies of monk parakeets
  • ...4 more annotations...
  • No other type of bird is known to move its tongue to vocalize
  • Parrots use their mobile, muscular tongues to explore their environment and manipulate food
  • Those capable organs
  • also help parrots utter greetings in words that even humans can understand.
Mars Base

Scientists About to Find The Force - 0 views

gizmodo.com/...ntists-about-to-find-the-force

scibyte25 HiggsBoson

shared by Mars Base on 09 Dec 11 - No Cached
  • CERN scientists may have already found evidence of the existence of the elusive Higgs boson
  • scientist from the Cern particle physics laboratory has told the BBC he expects to see "the first glimpse" of the Higgs boson next week
  • Tuesday, when two Large Hadron Collider teams would reveal the results of their research, highlighting ten candidates that show evidence of Higgs
  • ...8 more annotations...
  • Those ten candidates were found from the remains of about 350 trillion collisions using the ATLAS and CMS detectors.
  • Higgs field that is everywhere
  • The elusive Higgs particle would be the carrier of that field, interacting with all the other particles
  • The Higgs boson is a pivotal part of the standard model of particle physics
  • one of the main reasons of why the Large Hadron Collider was built
  • we've been living with Higgs theory now for almost 50 years
  • Tuesday's data will not be confirmed until they are able to produce repeated evidence in future experiments
  • expect this to happen around next summer
Mars Base

Scientists Discover Material Harder Than Diamond - 0 views

www.physorg.com/news153658987.html

scibyte25

shared by Mars Base on 10 Dec 11 - Cached
  • calculated that another material, lonsdaleite (also called hexagonal diamond, since it’s made of carbon and is similar to diamond), is even stronger than w-BN and 58 percent stronger than diamond
  • marks the first case where a material exceeds diamond in strength under the same loading conditions
  • Normal compressive pressures under indenters cause the materials to undergo a structural phase transformation into stronger structures, conserving volume by flipping their atomic bonds
  • ...1 more annotation...
  • experimenting with w-BN and lonsdaleite will be challenging, since both materials are difficult to synthesize in large quantities
Mars Base

New carbon allotrope could have a variety of applications - 0 views

www.physorg.com/...rope-variety-applications.html

scibyte25

shared by Mars Base on 10 Dec 11 - No Cached
  • Since the 1980s, scientists have been synthesizing newer allotropes, including carbon nanotubes, graphene, and fullerenes, all of which have had a significant scientific and technological impact.
  • scientists have been investigating a wide variety of new – and sometimes elusive – carbon allotropes
  • scientists also noted that T-carbon could have astronomical implications as a potential component of interstellar dust and carbon exoplanets
  • ...3 more annotations...
  • long-standing puzzle in astronomy known as the ‘carbon crisis’ in interstellar dust
  • Observations by the Hubble telescope revealed that the carbon budget in dust is deep in the red, and there is not sufficient carbon in dust to account for the light distortions
  • researchers would like to synthesize the new allotrope in the lab, although they say that this would likely be very difficult.
1 - 12 of 12
Showing 20▼ items per page