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johannessimon81

Chemists create molecular 'leaf' that collects and stores solar power without solar panels - 1 views

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    An international team of scientists led by Liang-shi Li at Indiana University has achieved a new milestone in the quest to recycle carbon dioxide in the Earth's atmosphere into carbon-neutral fuels and others materials.
Alexander Wittig

Calling Bullshit - 2 views

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    A college course at University of Washington on "Calling Bullshit". We should invite them to give a lunch lecture at ESA...

    Our aim in this course is to teach you how to think critically about the data and models that constitute evidence in the social and natural sciences.

    While bullshit may reach its apogee in the political domain, this is not a course on political bullshit. Instead, we will focus on bullshit that comes clad in the trappings of scholarly discourse.

    Our learning objectives are straightforward. After taking the course, you should be able to:

    * Remain vigilant for bullshit contaminating your information diet.
    * Recognize said bullshit whenever and wherever you encounter it.
    * Figure out for yourself precisely why a particular bit of bullshit is bullshit.
    * Provide a statistician or fellow scientist with a technical explanation of why a claim is bullshit.
    * Provide your crystals-and-homeopathy aunt or casually racist uncle with an accessible and persuasive explanation of why a claim is bullshit.

    We will be astonished if these skills do not turn out to be among the most useful and most broadly applicable of those that you acquire during the course of your college education.
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    love it:
    "Politicians are unconstrained by facts. Science is conducted by press release. Higher education rewards bullshit over analytic thought. Startup culture elevates bullshit to high art. Advertisers wink conspiratorially and invite us to join them in seeing through all the bullshit - and take advantage of our lowered guard to bombard us with bullshit of the second order. The majority of administrative activity, whether in private business or the public sphere, seems to be little more than a sophisticated exercise in the combinatorial reassembly of bullshit.

    We're sick of it. It's time to do something, and as educators, one constructive thing we know how to do is to teach people. So, the aim of this course is to help students navigate the bullshit-rich modern environment by identifying bullshit, seeing through it, and combating it with effective analysis and argument."
jcunha

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

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    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?
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    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."
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    Might still be OK micro to mm sized experiments.
    The technique seams to be reliable and cheap enough to compete with other types of microgravity approaches - more research needed to define boundaries of course.
Alexander Wittig

Proof of the Riemann Hypothesis utilizing the theory of Alternative Facts - 0 views

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    An excellent science coffee topic! This is a true breakthrough in pure mathematics with plentiful applications in the lesser sciences (such as theoretical physics). People tell me quantum gravity is already practically solved by this.

    Conway's powerful theory of Alternative Facts can render many difficult problems tractable. Here we demonstrate the power of AF to prove the Riemann Hypothesis, one of the most important unsolved problems in mathematics. We further suggest applications of AF to other challenging unsolved problems such as the zero-equals-one conjecture (which is also true) and the side-counting problem of the circle.
Alexander Wittig

Deepest X-ray Image Ever Reveals Black Hole Treasure Trove - 1 views

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    Deepest X-ray Image Ever Reveals Black Hole Treasure Trove An unparalleled image from NASA's Chandra X-ray Observatory gives astronomers the best look yet at the growth of black holes over billions of years beginning soon after the Big Bang.
fichbio

Plants 'see' underground by channelling light to their roots - 2 views

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    A light-bulb moment? Plants seem to pipe sunlight directly down into underground roots to help them grow. Light receptors in stems, leaves and flowers have long been known to regulate plant growth. Roots also have these receptors, but it has been unclear how they sense light deep in dark soil.
aborgg

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

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    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

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

Full 360-deg 3D electronic holographic tabletop display - 2 views

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    Cool hologram generating tabletop. Check the videos. Would be interesting if it could be scaled down..
jcunha

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

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    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.
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    Can it also be applied for infrared imagery?
johannessimon81

memristor-brain | University of Southampton - 3 views

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    Memristor-Based Artificial Neural Networks, huge potential for true, high-power AI
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    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/
johannessimon81

IBM Neuromorphic chip hits DARPA milestone and has been used to implement deep learning - 2 views

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    "IBM delivered on the DARPA SyNAPSE project with a one million neuron brain-inspired processor. The chip consumes merely 70 milliwatts, and is capable of 46 billion synaptic operations per second, per watt-literally a synaptic supercomputer in your palm." --- No memristors..., yet.: https://www.technologyreview.com/s/537211/a-better-way-to-build-brain-inspired-chips/
jcunha

Science Fiction Special on Nature - 2 views

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    Some interesting reads 150 years after H. G. Wells and 50 years after Star Trek.
johannessimon81

There's a Planet Like Earth Orbiting the Nearest Star to the Sun - 0 views

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    Time to get out the Fission Fragment Rocket Engine!
Alexander Wittig

Has a Hungarian physics lab found a fifth force of nature? - 1 views

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    MTA-Atomki A laboratory experiment in Hungary has spotted an anomaly in radioactive decay that could be the signature of a previously unknown fifth fundamental force of nature, physicists say - if the finding holds up.

    Would be cool, after all the high energy physics being done to verify the SM it could be extended at the other end where nobody bothered to look ;)
jcunha

First completely scalable quantum simulation of a molecule - 0 views

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    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.
Athanasia Nikolaou

Schrödinger's Smoke - 1 views

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    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

Engineered 'sand' may help cool electronic devices - 0 views

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    Baratunde Cola would like to put sand into your computer. Not beach sand, but silicon dioxide nanoparticles coated with a high dielectric constant polymer to inexpensively provide improved cooling for increasingly power-hungry electronic devices. The silicon dioxide doesn't do the cooling itself.
jcunha

Europe plans giant billion-euro quantum technologies project - 0 views

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    After graphene and blue brain, the European Commission has quietly announced plans to launch a €1-billion Euro project to boost a raft of quantum technologies - from secure communication networks to ultra-precise gravity sensors and clocks.
fichbio

First evidence that sperm epigenetics affect the next generation - 0 views

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    A frog study provides the strongest evidence yet that a father's lifestyle may affect the next generation, via chemical tags that change gene activity SPERM pass on more than just their DNA. Chemical switches attached to the genomes of sperm - known as epigenetic tags - have been shown to alter the next generation for the first time.
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