Physics

LOVE. - Big Papa Silence

"...old notion of geek-dom has ... evolved into a new, tech-savy, and dare we say ‘cool’ geek’" - İnanç Gümüş

İşimiz var abi sonra gel bir ara :) - Aykın Çakaloz

It's a kind of old news though... - İnanç Gümüş

"Electron positions were mapped by observing the diffraction of X-ray pulses lasting tens of femtoseconds (quadrillionth of a second). Positions of protons and other nuclei were deduced from the locations of regions of high electron density. Within the crystal, the excited electrons transferred from the sulfate groups to a tight channel within crystal matrix. This channel was stabilized by the transfer of protons from adjacent ammonium groups into the channel. This transfer mechanism had not been previously observed or proposed, and the researchers had expected to see much smaller displacements." - Imabug from Bookmarklet

"Big Beta Decay zip-up particle with mini particles" - Imabug from Bookmarklet

Looks like it's going to work really well and possibly amenable to filling with helium. Great work Ant and Pranav! - Steve Koch from Bookmarklet

"Fun, interactive, research-based simulations of physical phenomena from the PhET project at the University of Colorado." - Mike Chelen from Bookmarklet

"The physics blogs are abuzz with rumours that a particle of dark matter has finally been found. If it is true, it is huge news. Dark matter is thought to make up 90 per cent of the universe's mass and what evidence there is for it remains highly controversial. That's why any news of a sighting is seized upon." - Nikola from Bookmarklet

Finally..researchers at the National Ignition Facility in California are one step closer to the elusive goal of triggering a self-sustained, stable fusion reaction - Anti Walker

"After a year’s delay, the Large Hadron Collider near Geneva became the world’s highest-energy particle accelerator on November 30, revving up each of its twin proton beams to energies of 1.18 trillion electron volts. That smashes the record of 0.98 trillion eV held since 2001 by the Fermi National Accelerator Laboratory’s Tevatron in Batavia, Ill." - Imabug from Bookmarklet

"Protons and neutrons ("nucleons") are made up of three highly energetic quarks that move around in their tightly confined space with a broad range of different momenta. It was assumed that this momentum distribution would be unaffected by the nuclear environment, since the binding force between the quarks is hundreds of times greater than that between the relatively widely-spaced nucleons. But in 1983, the European Muon Collaboration (EMC) at CERN near Geneva discovered that the quarks in iron nuclei were about 20 percent less likely to be moving with high momentum than quarks inside free nucleons. "It's as if you put an apple in a bucket and it started looking like a pear," says Gerald A. Miller of the University of Washington in Seattle." - Imabug from Bookmarklet

"The Khan Academy is a not-for-profit organization with the mission of providing a high quality education to anyone, anywhere. We have 800+ videos on YouTube covering everything from basic arithmetic and algebra to differential equations, physics, and finance which have been recorded by Salman Khan. He has also developed a free, adaptive math program available here. To keep abreast of new videos as we add them, subscribe to the Khan Academy channel on YouTube. The entire video library is shown below. Just click on a category or video title to start learning from the Khan Academy! " - Mike Chelen from Bookmarklet

KHAAAAAAAAAAAAAAAAAAAAAAANNNN!!!!!! (Oh come on, someone had to do it.) - Bill Hooker

Bill: haha, if they ever make a self-promotional video, it must include that! - Mike Chelen

"String theorist Michael Green has been announced as the next Lucasian Professor of Mathematics at Cambridge University. Green, 63, will succeed Stephen Hawking who held the chair from 1980 before retiring last month at the age of 67 and taking up a distinguished research chair at the Perimeter Institute for Theoretical Physics in Canada." - Imabug from Bookmarklet

"The light is first refracted as it enters the surface of the raindrop, reflected off the back of the drop, and again refracted as it leaves the drop. The overall effect is that the incoming light is reflected back over a wide range of angles, with the most intense light at an angle of 40°–42°. The angle is independent of the size of the drop, but does depend on its refractive index. Seawater has a higher refractive index than rain water, so the radius of a 'rainbow' in sea spray is smaller than a true rainbow. This is visible to the naked eye by a misalignment of these bows.[2] The amount by which light is refracted depends upon its wavelength, and hence its colour. Blue light (shorter wavelength) is refracted at a greater angle than red light, but due to the reflection of light rays from the back of the droplet, the blue light emerges from the droplet at a smaller angle to the original incident white light ray than the red light. You may then think it is strange that the pattern of... more... - Mike Chelen

"A theorist publishing in the 21 August Physical Review Letters offers a new explanation for this apparent conflict between the time-symmetry of the physical laws and the forward "arrow of time" we see in everyday events. When viewed in quantum terms, events that increase the entropy of the Universe leave records of themselves in their environment. The researcher proposes that events that go "backward," reducing entropy, cannot leave any trace of having occurred, which is equivalent to not happening." - Imabug from Bookmarklet

"I was looking for that transition," she says. "I knew what the colloids looked like in a crystal state, and I knew what they looked like as a liquid, but I didn't know what they looked like in-between. When I finally saw (the transition), I felt like I had won the lottery." - Iphigenie from Bookmarklet

See also his open notebook page: http://openwetware.org/wiki... - Steve Koch

"In June 1948, the Physical Review published a description of a novel electronic device that "may be employed as an amplifier, oscillator, and for other purposes for which vacuum tubes are ordinarily used." That statement hardly begins to capture the importance of the transistor, which made possible technology unimaginable at the time. But the first transistor design never saw commercial success." - Imabug from Bookmarklet

"How else could a future quantum engineer build a quantum computer if they can't tell which circuits they have?" - Benjamin Tseng from Bookmarklet

"The device created by University of Miami Physicist Stewart E. Barnes, of the College of Arts and Sciences and his collaborators can store energy in magnets rather than through chemical reactions. Like a winding up toy car, the spin battery is "wound up" by applying a large magnetic field --no chemistry involved. The device is potentially better than anything found so far, said Barnes." - Imabug from Bookmarklet