Message boards :
Science (non-SETI) :
Interesting Physics
Message board moderation
Author | Message |
---|---|
SciManStev Send message Joined: 20 Jun 99 Posts: 6658 Credit: 121,090,076 RAC: 0 |
I found another interesting article on my smart phone that I thought was worth sharing. This new phone has been the source of a remarkable amount of information. This thread can be for anything interesting in physics that may not warrant a separate thread. http://www.nature.com/news/quantum-spookiness-passes-toughest-test-yet-1.18255 Steve Warning, addicted to SETI crunching! Crunching as a member of GPU Users Group. GPUUG Website |
Julie Send message Joined: 28 Oct 09 Posts: 34060 Credit: 18,883,157 RAC: 18 |
I have some interesting Berkeley news here: Experiment attempts to snare a dark energy ‘chameleon’ rOZZ Music Pictures |
janneseti Send message Joined: 14 Oct 09 Posts: 14106 Credit: 655,366 RAC: 0 |
The MAX-IV laboratory will host the first two 'fourth-generation' light sources. Electrons have begun circulating in a synchrotron in Lund, Sweden, in what researchers hope marks the start of a new era for X-ray science. http://www.nature.com/news/next-generation-x-ray-source-fires-up-1.18253 Our universe. |
W-K 666 Send message Joined: 18 May 99 Posts: 19393 Credit: 40,757,560 RAC: 67 |
For those with access to the BBC's iPlayer, there is a series presented by Jim Al-Khalili dealing with the spooky entanglement available at the moment. The Secrets of Quantum Physics, Let there be Life Physicist Jim Al-Khalili routinely deals with the strangest subject in all of science - quantum physics, the astonishing and perplexing theory of sub-atomic particles. But now he's turning his attention to the world of nature. Can quantum mechanics explain the greatest mysteries in biology? |
janneseti Send message Joined: 14 Oct 09 Posts: 14106 Credit: 655,366 RAC: 0 |
For those with access to the BBC's iPlayer, there is a series presented by Jim Al-Khalili dealing with the spooky entanglement available at the moment. And let there be light. Hopefully Jim Al-Khalili will let Swedish Television show that documentry. Many of his other series has been broadcasted here. |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
I was at Trieste Area Science Park while the Elettra Synchrotron Radiation Source was being built. This in the Nineties. Once a Slovak woman who was a physicist working on the Elettra came to my office and asked me for advice. Some mechanical parts which were parts of the magnets focussing the beams had been built with an error of one millimeter from the blueprints by an Italian firm which I will not name. She told me that if they sent back the parts it would impose a delay of about six months on the building schedule. Do you think we should install them and pray? she asked me. I said yes. Since Elettra started working on schedule and has now been coupled to a free electron laser, I think my judgment was right. But I received no recognition. Tullio. |
janneseti Send message Joined: 14 Oct 09 Posts: 14106 Credit: 655,366 RAC: 0 |
About building schedule, Tullio. They at MAX IV will build eight experimental stations, or beamlines, around the synchrotron, which they plan to open on 21 June 2016, a date chosen for the symbolism of the summer solstice. I hope our mechanical parts are right. |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
Elettra has 12 beamlines. One of them was devoted to scanning for mammary cancer. Elettra is used also by scientists from Eastern Europe since is nearer to them than Grenoble or Hamburg.I believe your mechanical parts will be perfect. Italian firms are rather sloppy sometimes. Tullio |
Sirius B Send message Joined: 26 Dec 00 Posts: 24910 Credit: 3,081,182 RAC: 7 |
With only 8 posts and 3 from the usual spammer, I decline to join in. So not very intelligent then to state the above. Usual post count boost is it? Unless you have something constructive to say on a science thread, stop spamming it with your usual twaddle. |
Darth Beaver Send message Joined: 20 Aug 99 Posts: 6728 Credit: 21,443,075 RAC: 3 |
Very Interesting Science man . soon as they can get phones to do it I'm in the shop to get one . And the N.S.A , C.I.A , F.B.I , A.F.P , K.G.B, blah blah balh Can't spy on me |
janneseti Send message Joined: 14 Oct 09 Posts: 14106 Credit: 655,366 RAC: 0 |
For those with access to the BBC's iPlayer, there is a series presented by Jim Al-Khalili dealing with the spooky entanglement available at the moment. For non british here is Jim Al-Khalili. Evening Discourse at the Royal Institution, Professor Jim Al-Khalili explores how the mysteries of quantum theory might be observable at the biological level Jim Al-Khalili - Quantum Life: How Physics Can Revolutionise Biology https://www.youtube.com/watch?v=wwgQVZju1ZM Jack Tuszynski Biology on the Threshold of Quantum Revolution https://www.youtube.com/watch?v=Gxqxb3xnntQ |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
Watched them both. Not much new, after reading Schroedinger's "What is life?" and Penrose's "The emperor's new mind" and "Shadows of the mind". I had an exchange of letters with Penrose on this subject in 1995. That is twenty years ago. Tullio |
janneseti Send message Joined: 14 Oct 09 Posts: 14106 Credit: 655,366 RAC: 0 |
Watched them both. Not much new, after reading Schroedinger's "What is life?" and Penrose's "The emperor's new mind" and "Shadows of the mind". I had an exchange of letters with Penrose on this subject in 1995. That is twenty years ago. To us commoners it's very new Tullio:) It was "only" 70 years ago Schrödinger when he come up with the idea that genes contained some kind of "code". We now call it DNA. http://www.theguardian.com/science/blog/2013/feb/07/wonders-life-physicist-revolution-biology |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
The only new thing I learned is that a DNA mutation can derive from a quantum tunneling effect in a Hydrogen bond. I also learned that European robin birds rely on entanglement in a crystal in their beaks to navigate in the Earth's magnetic field. Bravi robin! Tullio |
Julie Send message Joined: 28 Oct 09 Posts: 34060 Credit: 18,883,157 RAC: 18 |
|
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
Frankly I don't understand. The two electrons in A and B are not entangled. If each of them sends out a photon with which it is entangled and if the photons arrive at the same instant in C then the electrons in A and B become entangled. This is what I get from the New Scientist article, but maybe the article is not clear enough and I should read the full article. Tullio |
KLiK Send message Joined: 31 Mar 14 Posts: 1304 Credit: 22,994,597 RAC: 60 |
What a load of rubbish!!!!!!! I agree with u...even if experiment is OK & proves that some things r predetermined 2 happen...that doesn't mean I don't have a choice how 2 respond 2 it! if a war happens, u have choices: 2 fight, 2 hide & 2 run... if a comet strikes, u have choices: 2 make love, 2 run 4 ur life, 2 escape 2 Moon & back, 2 hide underground, 2 hide under d sea... d experiment only says: "Whatever happens, will happen. But if u don't have choices & free will, like electrons don't, then u'll change also!" ;) non-profit org. Play4Life in Zagreb, Croatia, EU |
janneseti Send message Joined: 14 Oct 09 Posts: 14106 Credit: 655,366 RAC: 0 |
Frankly I don't understand. The two electrons in A and B are not entangled. If each of them sends out a photon with which it is entangled and if the photons arrive at the same instant in C then the electrons in A and B become entangled. This is what I get from the New Scientist article, but maybe the article is not clear enough and I should read the full article. Some more on loopholes. https://en.wikipedia.org/wiki/Loopholes_in_Bell_test_experiments http://arxiv.org/abs/1508.05949 http://michelvanbaal.weblog.tudelft.nl/2014/04/22/the-loophole-free-what/?TUD-USE-COOKIES=yes http://michelvanbaal.weblog.tudelft.nl/2015/02/02/the-loophole-free-what-part-2/ Welcome to the Hanson lab at Delft University of Technology! http://hansonlab.tudelft.nl/ |
janneseti Send message Joined: 14 Oct 09 Posts: 14106 Credit: 655,366 RAC: 0 |
"Whatever happens, will happen. But if u don't have choices & free will, like electrons don't, then u'll change also!" The Many-Worlds Interpretation says that if something happens all other choices happens as well. Multiple universes have been hypothesized in cosmology, physics, astronomy, religion, philosophy, transpersonal psychology, and fiction, particularly in science fiction and fantasy. In these contexts, parallel universes are also called "alternate universes", "quantum universes", "interpenetrating dimensions", "parallel dimensions", "parallel worlds", "alternate realities", "alternate timelines", and "dimensional planes", among other names. Cosmologist Max Tegmark professor at MIT are studying this. http://space.mit.edu/home/tegmark/crazy.html |
tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 |
"Nature" magazine calls the result of the Hanson experiment "Entanglement swapping". My interpretation was correct, the two photons becoming entangled at C propel back the entanglement to the electrons in A and B. Tullio |
©2024 University of California
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.