Skip to main content

Home/ Advanced Concepts Team/ Group items tagged phy

Rss Feed Group items tagged

jaihobah

Black Hole Power: How String Theory Idea Could Lead to New Thermal-Energy Harvesting Te... - 0 views

  •  
    A new class of exotic materials could find its way into next-generation technologies that efficiently convert waste heat into electrical current according to new research. Both the exotic materials and the means by which they generate electricity rely on a hybrid of advanced concepts-including string theory combined with black holes combined with cutting-edge condensed matter physics.
  •  
    Sounds spooky
jaihobah

Vanishing star hints at direct collapse to black hole - 0 views

  •  
    The rules for a stellar death seem pretty simple. If the star isn't that massive, it burns out into a carbon-rich remnant called a white dwarf. If it's big enough, the star ends in a bang, exploding in a supernova that can leave behind a neutron star or a black hole.
jaihobah

[1701.01109] Fast Radio Bursts from Extragalactic Light Sails - 2 views

  •  
    "We examine the possibility that Fast Radio Bursts (FRBs) originate from the activity of extragalactic civilizations"
jcunha

New method uses heat flow to levitate variety of objects - 1 views

  •  
    Normally we associate levitation of objects to superconducting materials. Here a new technique is shown where levitation of a whole new range of materials is shown.
    "The large temperature gradient leads to a force that balances gravity and results in stable levitation," said Fung, the study's lead author. "We managed to quantify the thermophoretic force and found reasonable agreement with what is predicted by theory. This will allow us to explore the possibilities of levitating different types of objects."
    Paper at http://aip.scitation.org/doi/10.1063/1.4974489

    New microgravity experiments possibility?
  •  
    not really I fear .... "Typical sizes of the trapped particles are between 10 μm and 1 mm at a pressure between 1 and 10 Torr. The trapping stability is provided radially by the increasing temperature field and vertically by the transition from the free molecule to hydrodynamic behavior of thermophoresis as the particles ascend."
  •  
    Might still be OK micro to mm sized experiments.
    The technique seems to be reliable and cheap enough to compete with other types of microgravity approaches - more research needed to define boundaries of course.
jaihobah

Saturday Morning Breakfast Cereal - The Talk - 1 views

  •  
    Quantum mechanics PSA
Athanasia Nikolaou

Healthier blueberries, thanks to a blast of purple plasma - 0 views

  •  
    Sterilizing food with solar wind??
jcunha

First 'water-wave' laser created - 0 views

  •  
    Technion researchers have demonstrated, for the first time, that laser emissions can be created through the interaction of light and water waves, in practice mechanical oscillations in fluids at the nanoscale.
    Interesting concept on the verge of two so far different fields!
jaihobah

Measurement of Impulsive Thrust from a Closed Radio-Frequency Cavity in Vacuum (AIAA) - 2 views

  •  
    An intermediate level discussion of those results by Scott Manley (Physicist, Kerbal Space Program YouTuber): https://www.youtube.com/watch?v=JGcvxg7jJTs
aborgg

Swarm of Origami Robots Can Self Assemble Out of a Single Sheet - 5 views

  •  
    In case you are interested in Martin's past project, this article covers his master thesis. Potential for space?

    One of the biggest challenges with swarms of robots is manufacturing and deploying the swarm itself. Even if the robots are relatively small and relatively simple, you're still dealing with a whole bunch of them, and every step in building the robots or letting them loose is multiplied over the entire number of bots in the swarm.
johannessimon81

Physics tweak solves five of the biggest problems in one go - 3 views

  •  
    Extension of standard model to explain a number of unexplained phenomena.
jcunha

Achieving the ultimate optical resolution by breaking Rayleigh's criterion - 1 views

  •  
    The Rayleigh criterion specifies the minimum separation between two incoherent point sources that may be resolved into distinct objects. Here, a strategy to break the limits of this criterion for the first time, some small allusion to telescopic systems.
  •  
    Can it also be applied for infrared imagery?
jcunha

Why does deep and cheap learning work so well? - 2 views

  •  
    Physicists from MIT explain why deep learning is that much successful using physics.
jaihobah

New Boson Claim Faces Scrutiny - 0 views

  •  
    "The Atomki group has produced three previous papers on their beryllium-8 experiments - conference proceedings in 2008, 2012 and 2015. The first paper claimed evidence of a new boson of mass 12 MeV, and the second described an anomaly corresponding to a 13.45-MeV boson. (The third was a preliminary version of the Physical Review Letters paper.) The first two bumps have disappeared in the latest data, collected with an improved experimental setup. "The new claim now is [a] boson with a mass of 16.7 MeV," Naviliat-Cuncic said. "But they don't say anything about what went wrong in their previous claims and why we should not take those claims seriously." One naturally wonders, he said, "Is this value that they quote now going to change in the next four years?""
Athanasia Nikolaou

Schrödinger's Smoke - 1 views

  •  
    A team of researchers in TU berlin and Caltech used Schrödinger's equation to visualise superfluidic flow (fluids with zero viscosity). Smoke and dry ice are close to this state in nature. Strangely enough for an equation that describes subatomic particles, it works, and reproduces experimental results better that Euler and Langrange schemes.
jcunha

Synthetic Landau levels for photons - 1 views

  •  
    Very nice experiment on the verge of Condensed matter Physics!
    The presence of Landau levels is a necessary condition to obtain a Quantum Hall state. Quantum Hall states have first appeared in 2D electronic gases when applied a perpendicular magnetic field that induces a new topological state of the "electronic gas". This new topological state is believed to "protect" some parameters of the system, such as conductance making it possible to measure fundamental constants with very high precision even in imperfect experimental conditions.

    In this fundamental experiment, a synthetic magnetic field was created that acts in continuum photons, producing "an integer quantum Hall system in curved space, a long-standing challenge in condensed matter physics".
1 - 20 of 660 Next › Last »
Showing 20 items per page