Physics
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Blue skies make the heart soar and poets rush for quill and ink. The blue dome has subtle variety. Overhead it is darker - noticeably so from mountains or airplanes.
Why is the sky blue?
Weird! Quantum Entanglement Can Reach into the Past | Wacky Physics of Entangled Particles
Spooky quantum entanglement just got spookier. Entanglement is a weird statewhere two particles remain intimately connected, even when separated over vast distances, like two die that must always show the same numbers when rolled. For the first time, scientists have entangled particles after they've been measured and may no longer even exist.Antimatter Atom Measured for the First Time
Scientists have taken the first-ever measurement of an atom made of antimatter. This measurement, though not very precise, represents a first step toward being able to study antimatter atoms in detail — a goal necessary for understanding why the universe is made of matter and not antimatter, its mysterious sibling. All particles of matter are thought to have antimatter partners with the same mass but opposite charge. When these pairs meet, they annihilate each other to become pure energy. Scientists think the universe contained equal parts of matter and antimatter just after the Big Bang, which is believed to have started everything 13.7 billion years ago.
Wacky Physics: New Uncertainty about the Uncertainty Principle | Heisenberg Uncertainty Principle | Quantum Mechanics
One of the most often quoted, yet least understood, tenets of physics is the uncertainty principle.Physicists have just upped their ante: Not only have they split atoms but, even trickier, they've put them back together. Their secret? Quantum physics. A team of scientists was able to "split" an atom into its two possible spin states, up and down, and measure the difference between them even after the atom resumed the properties of a single state. The research wasn't just playtime for quantum physicists : It could be a steppingstone toward the development of a quantum computer, a way to simulate quantum systems (as plant photosynthesis and other natural processes appear to be) that would help solve complex problems far more efficiently than present-day computers can.
Franken-Physics: Atoms Split in Two & Put Back Together | Quantum Physics
Leap Second Science: Earth's Longer Day Explained
Today will be one second longer than usual, and we have the moon to thank for the extra time. A " leap second " will be added to the world's official clocks this evening (June 30), to account for the fact that Earth's rotation is slowing ever so slightly — meaning our days are getting longer, at the rate of about 1.4 milliseconds every 100 years. "At the time of the dinosaurs, Earth completed one rotation in about 23 hours," Daniel MacMillan, of NASA’s Goddard Space Flight Center in Greenbelt, Md., said in a statement. "In the year 1820, a rotation took exactly 24 hours, or 86,400 standard seconds.
Newly Discovered Particle Appears to Be Long-Awaited Higgs Boson | Wired Science
<img class="alignnone size-full wp-image-118915" title="e-mail : contact@peterginter.com" src="http://www.wired.com/images_blogs/wiredscience/2012/07/atlasginter.jpg" alt="" width="660" height="440" /> Prepare the fireworks: The discovery of the Higgs boson is finally here. Early in the morning on July 4, physicists with the Large Hadron Collider at CERN announced they have found a new particle that behaves similarly to what is expected from the Higgs. “As a layman, I would now say, I think we have it,” said CERN director-general Rolf-Dieter Heuer. “It’s a historic milestone today. I think we can all be proud, all be happy.”
Científicos fotografían por primera vez la sombra de un átomo
Lo que vemos en la imagen es un hito conseguido por un grupo de investigadores de la Universidad de Griffith. Habían conseguido fotografiar la sombra de un solo átomo por primera vez en la historia, un único átomo que sitúa el límite extremo de la microscopía. ¿Cuántos átomos se necesitan para emitir una sombra? Esta pregunta es la base en la que se sustentaba la investigación de los investigadores.PhysicsCentralAPS
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Quantum Levitation–where science videos don’t get any cooler! | PsiVid
This video demonstrating the power of superconductivity has been making the rounds this week and is an example of how video is really the best way to capture and share with thousands of viewers the amazing power of science! You will notice that the video is a demonstration without the science explained live. It was a missed opportunity in my opinion. Thankfully, Tel-Aviv University, who is responsible for the demonstration, has posted an explanation of the Meissner Effect as demonstrated by a liquid nitrogen cooled disc composed of a sapphire wafer coated thinly with yttrium barium copper oxide.Sandrine Ceurstemont, editor, New Scientist TV Thanks to GPS, planes, cars and cellphones can quickly be guided to any destination. The system uses a network of satellites, but how do they relay the correct coordinates from space? In our latest One-Minute Physics episode, animator Henry Reich explains why GPS is just a big clock in space. By communicating with four time-keeping satellites, a GPS device can determine its exact position - but that's after it corrects for the effects of general relativity . If you enjoyed this video, check out the rest of our One-Minute Physics series .
New Scientist TV: One-Minute Physics: Why GPS is just a clock in space
The Physics of Angry Birds | Wired Science
You know the game, I know you know. Angry Birds . I have an attraction to games like this. You can play for just a little bit at a time (like that) and each time you shoot, you could get a slightly different result. Oh, you don’t know Angry Birds ?Sandrine Ceurstemont, editor, New Scientist TV Combing a ball covered with hair is no easy feat if you want the hair to lie flat. In this One-Minute Math episode, animator Henry Reich explains the algebraic theorem responsible which proves that hair must stick up somewhere on the sphere. The theorem is also relevant to wind velocity on the surface of the Earth, showing that there is always one point where the wind isn't blowing. If you enjoyed this video, check out our One-Minute Physics series to find out for example, why past and future are the same or why GPS is just a big clock in space .