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Luís F. Simões

Physicists Discover a Whopping 13 New Solutions to Three-Body Problem - ScienceNOW - 1 views

news.sciencemag.org/...cists-discover-a-whopping.html

MAD

shared by Luís F. Simões on 10 Mar 13 - No Cached
  • The discovery of 13 new families, made by physicists Milovan Šuvakov and Veljko Dmitrašinović at the University of Belgrade, brings the new total to 16.
  • All the solutions can be viewed online
  • Dario Izzo on 10 Mar 13
     
    They search numerically for initial conditions resulting in periodic orbits. Reminds to me the methods we employed for the "search for invariant relative motion" and which brought us to discover the magic inclinations (47.9 degrees). I wonder what are the implications. In any case nice plots :)
  • Francesco Biscani on 11 Mar 13
     
    Haven't read in detail, but it's not clear to me what it means exactly. If they were discovered numerically (I assume it means via numerical integration), how can they be sure the orbits are truly periodic?
johannessimon81

ESA article on magnetic reconnection, related: solar flares, earth magnetic field jets,... - 0 views

sci.esa.int/...index.cfm

PHY science space ESA CLUSTER

shared by johannessimon81 on 22 May 13 - No Cached
  • johannessimon81 on 22 May 13
     
    ESA Science & Technology: A leap forward in probing magnetic reconnection in space: Magnetic reconnection is a fundamental physical process in the Universe, playing a major role in various phenomena such as star formation or solar explosions, but also preventing plasma confinement in fusion reactors on Earth. However, a lack of precise measurements at the heart of this physical process prevents a full understanding of this phenomenon.
johannessimon81

NASA-Led Study Explains Decades of Black Hole Observations - 2 views

www.nasa.gov/...black-hole-study.html

PHY space science

shared by johannessimon81 on 18 Jun 13 - No Cached
  • johannessimon81 on 18 Jun 13
     
    Nice visualization of the structure of the accretion disk surrounding a black hole
Annalisa Riccardi

Smartphones, Tablets Help Researchers Improve Storm Forecasts - 0 views

www.sciencedaily.com/...130206141533.htm

shared by Annalisa Riccardi on 08 Feb 13 - No Cached
  • Annalisa Riccardi on 08 Feb 13
     
    The next advance in weather forecasting may not come from a new satellite or supercomputer, but from a device in your pocket. University of Washington atmospheric scientists are using pressure sensors included in the newest smartphones to develop better weather forecasting techniques.
johannessimon81

memristor-brain | University of Southampton - 3 views

www.southampton.ac.uk/...memristor-brain.page

technology science AI memristor

shared by johannessimon81 on 10 Oct 16 - No Cached
Dario Izzo and jcunha liked it
  • johannessimon81 on 10 Oct 16
     
    Memristor-Based Artificial Neural Networks, huge potential for true, high-power AI
  • jcunha on 02 Dec 16
     
    Memristors (for memory purposes - RRAM type) on the pipeline to be launched in orbit on a cubesat http://thewhitonline.com/2016/03/news/nasa-initiative-chooses-rowan-to-launch-satellite/
Athanasia Nikolaou

A Proposal For Juno To Observe The Volcanoes Of Io - Universe Today - 0 views

www.universetoday.com/...osal-juno-observe-volcanoes-io

space optimisation

shared by Athanasia Nikolaou on 31 Jan 17 - No Cached
  • Athanasia Nikolaou on 31 Jan 17
     
    Combination of the radio occultation method plus change in the orbital plan in order to observe new target (the volcanic outgassing from Io satellite) by passing though the magnetosphere of Jupiter. It poses a challenge in the sensitivity of the electronics. Maybe it is accepted if the risk is low. Idea for the next GTOC challenge maybe? Optimising the cost on the electronics vs the frequency of passages?
jcunha

First completely scalable quantum simulation of a molecule - 0 views

phys.org/...antum-simulation-molecule.html

quantum simulation science molecule chemical

shared by jcunha on 21 Jul 16 - No Cached
  • jcunha on 21 Jul 16
     
    A scalable quantum simulation of a molecule for the first time ever. It would finally enable practical simulation of "large" chemical systems. A research performed with Google and world class universities.
jcunha

The world's first demonstration of spintronics-based artificial intelligence - 2 views

phys.org/...d-artificial-intelligence.html

ANN spintronics neuromorphic technology

shared by jcunha on 22 Dec 16 - No Cached
LeopoldS liked it
  • jcunha on 22 Dec 16
     
    Researchers at Tohoku University have, for the first time, successfully demonstrated the basic operation of spintronics-based artificial neural network.
nikolas smyrlakis

The Scale of the Universe 2 - 3 views

htwins.net/scale2

shared by nikolas smyrlakis on 16 Feb 12 - No Cached
  • nikolas smyrlakis on 16 Feb 12
     
    bit 'popular science' but fun and maybe good for presentations
Lionel Jacques

Laser-wielding satellite swarm to deflect asteroids - 2 views

www.gizmag.com/...21965

space science

shared by Lionel Jacques on 28 Mar 12 - No Cached
LeopoldS liked it
  • Lionel Jacques on 28 Mar 12
     
    "The latest idea comes from engineers at Glasgow's University of Strathclyde who suggest that a swarm of laser-wielding satellites could nudge Earth-bound asteroids off their collision course.... One proposed deflection technique involves using lasers to pulverize the surface of the asteroid, ejecting tiny bits of rock that would act as a propellant and push it onto a different course."
pandomilla

Uncoiling the cucumber's enigma - 1 views

www.eurekalert.org/...hu-utc083012.php

shared by pandomilla on 31 Aug 12 - No Cached
  • pandomilla on 31 Aug 12
     
    Captivated by a strange coiling behavior in the grasping tendrils of the cucumber plant, researchers at Harvard University have characterized a new type of spring that is soft when pulled gently and stiff when pulled strongly. Instead of unwinding to a flat ribbon under stress, as an untwisted coil normally would, the cucumber's tendrils actually coil further.
  • pandomilla on 31 Aug 12
     
    ...interesting discovery that can add something to my ongoing Ariadna...
  • pandomilla on 31 Aug 12
     
    And here you have the paper published today on Science http://www.sciencemag.org/content/337/6098/1087.full
Luís F. Simões

Alice and Bob in Cipherspace » American Scientist - 1 views

www.americanscientist.org/...issue.aspx

INF cryptography

shared by Luís F. Simões on 11 Sep 12 - No Cached
  • A new form of encryption allows you to compute with data you cannot read
  • The technique that makes this magic trick possible is called fully homomorphic encryption, or FHE. It’s not exactly a new idea, but for many years it was viewed as a fantasy that would never come true. That changed in 2009, with a breakthrough discovery by Craig Gentry, who was then a graduate student at Stanford University. (He is now at IBM Research.) Since then, further refinements and more new ideas have been coming at a rapid pace.
LeopoldS

Graphite + water = the future of energy storage - Monash University - 6 views

www.monash.edu.au/...r-the-future-of-energy-storage

energy NRG storage graphene

shared by LeopoldS on 07 Nov 11 - No Cached
LeopoldS liked it
  • LeopoldS on 07 Nov 11
     
    any idea how this works - who wants to have a closer look at it?
  • ...3 more comments...
  • dejanpetkow on 08 Nov 11
     
    Water is used for keeping the graphene stacks separate. Without water or some other separation method the different graphene stacks would just stick together and graphene would lose its nice properties (like a huge surface). So, water has nothing to do with energy but is just the material which keeps the graphene stacks at distance. The result is a gel. Still, energy needs to be stored in the gel.
  • LeopoldS on 09 Nov 11
     
    and the different graphene layers act as anodes and cathodes??
  • dejanpetkow on 09 Nov 11
     
    Layer orientation in a gel is random. Additionally to that, cathodes and anodes are about charge seperation. Graphene layers are (as far as I understand) supposed to provide huge surfaces to which something, maybe a charge, can be attached. So do we need ions and electrons? Probably not. Probably just electrons which can travel easily through the gel. I guess the whole gel (and all layers inside) would be nagtively charged, making the gel blob a fluid cathode. But again, it's just a guess.
  • LeopoldS on 10 Nov 11
     
    Wouldn't it be worth having a closer look?
  • LeopoldS on 12 Nov 11
     
    it's still not clear to me how to get electricity in and out of this thing?
santecarloni

Pristine relics of the Big Bang spotted - physicsworld.com - 1 views

physicsworld.com/...47769

Universe Phy space

shared by santecarloni on 11 Nov 11 - No Cached
LeopoldS liked it
  • santecarloni on 11 Nov 11
     
    For the first time, astronomers have discovered two distant clouds of gas that seem to be pure relics from the Big Bang.
  • LeopoldS on 12 Nov 11
     
    and one of them is in "leo" .... "This gas is of primordial composition, as it was produced during the first few minutes after the Big Bang." One gas cloud resides in the constellation Leo"
Lionel Jacques

Event-hiding "temporal cloak" demonstrated - 2 views

www.gizmag.com/...20159

Phy science

shared by Lionel Jacques on 06 Nov 11 - No Cached
  • Lionel Jacques on 06 Nov 11
     
    Last year researchers at Imperial College London proposed that along with being used to cloak physical objects metamaterials could also be used to cloak a singular event in time. A year later, researchers from Cornell University have demonstrated a working "temporal cloak" that is able to conceal a burst of light as if it had never occurred.
Lionel Jacques

Scale of the Universe: from 10^-35 to 10^27m - 1 views

images.4channel.org/...scale_of_universe_enhanced.swf

Science Space Fun

shared by Lionel Jacques on 13 Feb 12 - No Cached
  • Lionel Jacques on 13 Feb 12
     
    Nice animation...
Luke O'Connor

Flying robot quadrotors have better rhythm than you - 2 views

www.guardian.co.uk/...ing-robot-quadrotors-ted-video

shared by Luke O'Connor on 02 Mar 12 - No Cached
  • Luke O'Connor on 02 Mar 12
     
    Robotics scientists at TED unleash co-ordinated drones that mimic bird behavior to play the James Bond theme song At TED2012, the University of Pennsylvania's deputy dean for education Vijay Kuma showed off his latest accomplishment in robotics: a co-ordinated rendition of the James Bond theme song.
Dario Izzo

Time travellers may be using Twitter and Facebook according to Robert Nemiroff and Tere... - 1 views

metro.co.uk/...ding-no-evidence-of-it-4249580

time travel space

shared by Dario Izzo on 14 Jan 14 - No Cached
  • Dario Izzo on 14 Jan 14
     
    "Time travellers may be using Twitter and Facebook, claim scientists, despite finding no evidence of it" the same can be said for most moders science "big claims with no evidence" :)
Thijs Versloot

Wirelessly charged buses start operation in UK - 1 views

phys.org/...-buses-wireless-uk-milton.html

technology transportation WPT

shared by Thijs Versloot on 14 Jan 14 - No Cached
  • Thijs Versloot on 14 Jan 14
     
    Charged like your electric toothbrush by lowering the receiving coils to 4cm above the ground.
  • LeopoldS on 15 Jan 14
     
    nice; there are similar trials ongoing a bit all over; there is one I know of in Mannheim, where i think they have quick charging coils at each stop to reduce the battery mass they need to carry; I have seen a demonstration of this in Kyoto university about 13 years ago on a normal car - even one where they had an entire road equipped with these chargers and tested with charging as you go , charing at traffic stops, parking etc ....
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