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22nd Century Physics

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Wave-Particle Duality. Does light consist of particles or waves?

Wave-Particle Duality

When one focuses upon the different types of phenomena observed with light, a strong case can be built for a wave picture: By the turn of the 20th century, most physicists were convinced by phenomena like the above that light could be fully described by a wave, with no necessity for invoking a particle nature. But the story was not over. Most commonly observed phenomena with light can be explained by waves. What is the Wave/Particle Duality? Part 1. Quantum Theory. Wave propagation. Science/Math. Neutrinos travel faster than light. Neutrinos travel faster than light. Particles Found to Travel Faster than Speed of Light. An Italian experiment has unveiled evidence that fundamental particles known as neutrinos can travel faster than light.

Particles Found to Travel Faster than Speed of Light

Other researchers are cautious about the result, but if it stands further scrutiny, the finding would overturn the most fundamental rule of modern physics—that nothing travels faster than 299,792,458 meters per second. The experiment is called OPERA (Oscillation Project with Emulsion-tRacking Apparatus), and lies 1,400 meters underground in the Gran Sasso National Laboratory in Italy. It is designed to study a beam of neutrinos coming from CERN, Europe's premier high-energy physics laboratory located 730 kilometers away near Geneva, Switzerland. Neutrinos are fundamental particles that are electrically neutral, rarely interact with other matter, and have a vanishingly small mass. Standard Model. Solar Energy. Transducer Software. Space. Space. Astronomy. Astronomy. Universcale. The Scale of Things.

The Scale of Things. Solar Energy. The Mystery of Gravity : The Astronomy Cafe : Dr. Sten Odenwald. UC Berkeley Press Release. By Robert Sanders, Media Relations | 13 November 2008 BERKELEY — After eight years and repeated photographs of a nearby star in hopes of finding planets, University of California, Berkeley, astronomer Paul Kalas finally has his prize: the first visible-light snapshots of a planet outside our solar system.

UC Berkeley Press Release

This 2006 Hubble Space Telescope optical image shows the belt of dust and debris (bright oval) surrounding the star Fomalhaut and the planet (inset) that orbits the star every 872 years and sculpts the inner edge of the belt. A coronagraph (center) on the Advanced Camera for Surveys blocks out the light of the star, which is 100 million times brighter than the planet.

(Paul Kalas/UC Berkeley, NASA, ESA) Cosmic race ends in a tie. Γ-ray bursts provide a way to study the 'lumpiness' of space-time predicted by some quantum theories.

Cosmic race ends in a tie

A race between two energetic photons that began more than 7 billion years ago and spanned half the cosmos has ended in a virtual dead heat. The result, if it stands up to scrutiny, would tighten the limits, suggested by some theories, on how ‘lumpy’ space-time can be. The work, to be presented on 11 January at the 219th meeting of the American Astronomical Society in Austin, Texas, by Robert Nemiroff of the Michigan Technological University in Houghton and his colleagues1, relies on an analysis of a short-lived, powerful stellar explosion known as a γ-ray burst that was recorded by NASA's Fermi Gamma-ray Space Telescope in May 2009 and dubbed GRB 090510A. The study focused on two photons, one with an energy of 25 gigaelectronvolts (GeV) and another of about 1.5 GeV, which were separated by just 0.00136 seconds. Naked black-hole hearts live in the fifth dimension - physics-math - 13 January 2012.

Read more: "Why physicists can't avoid a creation event" "IT SEEMS very rude to come to someone's party and tell him that he lost a bet again," said cosmologist Luis Lehner of the Perimeter Institute in Ontario, Canada.

Naked black-hole hearts live in the fifth dimension - physics-math - 13 January 2012

Lehner did it anyway. He was speaking at a meeting to celebrate Stephen Hawking's 70th birthday. Scientists Discover The Oldest, Largest Body Of Water In Existence. Scientists have found the biggest and oldest reservoir of water ever--so large and so old, it’s almost impossible to describe.

Scientists Discover The Oldest, Largest Body Of Water In Existence

The water is out in space, a place we used to think of as desolate and desert dry, but it's turning out to be pretty lush. Researchers found a lake of water so large that it could provide each person on Earth an entire planet’s worth of water--20,000 times over. Yes, so much water out there in space that it could supply each one of us all the water on Earth--Niagara Falls, the Pacific Ocean, the polar ice caps, the puddle in the bottom of the canoe you forgot to flip over--20,000 times over. Cosmos/Physics. Neutrino Parents Call Into Question Faster-than-light Results.

Faster-than-light neutrino claim bolstered - physics-math - 23 September 2011. Read more: "Neutrinos: Complete guide to the ghostly particle" Representatives from the OPERA collaboration spoke in a seminar at CERN today, supporting their astonishing claim that neutrinos can travel faster than the speed of light.

Faster-than-light neutrino claim bolstered - physics-math - 23 September 2011

The result is conceptually simple: neutrinos travelling from a particle accelerator at CERN in Switzerland arrived 60 nanoseconds too early at a detector in the Gran Sasso cavern in Italy. And it relies on three conceptually simple measurements, explained Dario Autiero of the Institute of Nuclear Physics in Lyon: the distance between the labs, the time the neutrinos left Switzerland, and the time they arrived in Italy. Particles Found to Travel Faster than Speed of Light.

Fundamental Particles. Piter De Vries. Character[edit] In the service of the ruthless Baron Vladimir Harkonnen, De Vries is a Mentat — a human specially trained to perform mental functions rivaling computers, which are forbidden universe-wide.

Piter De Vries

In addition, De Vries has been "twisted" (made into an amoral sadist) by his Tleilaxu creators.[1] De Vries is so loyal to Harkonnen that he continues to serve the Baron with great enthusiasm even though his Mentat abilities and great intelligence confirm his suspicions that his master plans to eventually kill him.[1] As he says in Dune: But you see, Baron, I know as a Mentat when you will send the executioner. You will hold back just so long as I am useful. Dune[edit] In Dune, it is established that De Vries had pioneered a type of toxin called "residual poison" which remains in the body for years and requires an antidote to be administered regularly. Prelude to Dune[edit] References[edit] External links[edit] HUMAN COMPUTER MENTAT : DUNE. Speed-of-light experiment 'was wrong after all'

Einstein, Anne Lamott, and Steve Jobs on Intuition vs. Rationality. News : FP7 News : Laser cooling of semiconductor membranes opens doors for quantum computing. Laser cooling of semiconductor membranes opens doors for quantum computing [Date: 2012-01-25] By innovatively combining two research fields - quantum physics and nanophysics - EU-funded Danish researchers have discovered a new method for laser cooling semiconductor membranes.

News : FP7 News : Laser cooling of semiconductor membranes opens doors for quantum computing

Semiconductors are vital components in many electronic goods such as solar cells and light-emitting diodes (LEDs), and it is important to be able to cool these components for the future development of quantum computers and ultrasensitive sensors. Physicists check whether neutrinos really can travel faster than light. FTL neutrinos explained? Not so fast, folks. If you haven’t heard about the experiment that apparently showed that subatomic particles called neutrinos might move faster than light (what we in the know call FTL, to make us look cooler), then I assume this is your first time on the internet.

FTL neutrinos explained? Not so fast, folks.

If that’s the case, then you can read my writeup on what happened. Basically, neutrinos move very very fast, almost at the speed of light.