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Juxi Leitner

Nasa scientists find evidence of flowing water on Mars | Science | The Guardian - 2 views

Nina Nadine Ridder

Watching an exoplanet in motion around a distant star - 5 views

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    Imaging of gas giant orbiting its central star (related to Jai's YGT proposal):

    With GPI, astronomers image the actual planet--a remarkable feat given that an orbiting world typically appears a million times fainter than its parent star. This is possible because GPI's adaptive optics sharpen the image of the target star by cancelling out the distortion caused by the Earth's atmosphere; it then blocks the bright image of the star with a device called a coronagraph, revealing the exoplanet.
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    such a simple image, such an awesome feat of science and engineering!
aborgg

Electron waves refract negatively - 1 views

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    Waves of electrons have been bent backward in a sheet of graphene, allowing physicists to focus electrons the way a lens focuses light.

    Electrons coursing through a sheet of carbon atoms exhibited negative refraction, bending at angles not seen in nature. By exploiting this unusual bending, the researchers created a lenslike device to focus the electrons to a tiny point. The new technique could help physicists learn how to manipulate electrons in the tight confines of miniaturized electronic devices, where the particles often behave like waves.
Nina Nadine Ridder

Enhanced marine sulphur emissions offset global warming and impact rainfall : Scientifi... - 0 views

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    ocean fertilization might induce increased marine aerosol (DMS) emissions leading to further cooling effect but also changes in precipitation
Thijs Versloot

Breakthrough observation of Mott transition in a superconductor - 1 views

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    An international team of researchers, including the MESA+ Institute for Nanotechnology at the University of Twente in The Netherlands and the U.S. Department of Energy's Argonne National Laboratory, announced today in Science the observation of a dynamic Mott transition in a superconductor.
Ma Ru

Intelligent Machines - BBC News - 3 views

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    AI week on BBC - interesting opportunity to get a glimpse into how the field is viewed by laymen...
Nina Nadine Ridder

The tiniest Lego: a tale of nanoscale motors, rotors, switches and pumps - 3 views

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    Inspired by biology, chemists have created a cornucopia of molecular parts that act as switches, motors and ratchets. Now it is time to do something useful with them.
Thijs Versloot

New theory to lead to radiationless revolution - 3 views

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    Physicists have found a radical new way to confine electromagnetic energy without it leaking away, akin to throwing a pebble into a pond with no splash. The theory could have broad ranging applications from explaining dark matter to combating energy losses in future technologies.
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    I think (but am not sure) that is related to a topic that Dirk Bouwmeester's group at Leiden University works on for a while now:
    "Linked and knotted beams of light"
    http://irvinelab.uchicago.edu/papers/nphys1056.pdf
johannessimon81

Breaking the optical diffraction limit by a factor 3-4... ideas for telescopes? - 0 views

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    In this article the authors describe an improvement of their optical microscope techniques for which some of the received a Nobel prize in the past. They achieve resolutions far beyond the optical diffraction limit which is supposed to limit detail resolution due to quantum-mechanical effects. Their techniques include structured illuminiation (producing interference patterns), switchable fluorescent markers as well as multi-frame super resolution enhancement. Authors are able to take a single image in about 0.3 seconds which allows the study of protein processes in the cell: http://spon.de/vgTb7 .
    Although it is hard to imagine the application of many of these techniques for telescopes (except for super resolution), I am wondering if any of this could help building telescopes with increased optical power or reduced weight. Any ideas..?
Ma Ru

Estimating the reproducibility of psychological science - 1 views

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    Apparently, between 33 to 50%. But I'm not convinced the results are reproducible...
jcunha

New frequency record breaking laser in the X-ray - 0 views

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    Good news for the imaging community: simpler and smaller x-ray sources are on the way.
Nina Nadine Ridder

Microscopic fish are 3-D-printed to do more than swim: Researchers demonstrate a novel ... - 1 views

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    Useful for space exploration, e.g. subsurface water reservoirs such as Europa or Enceladus?

    Nanoengineers at the University of California, San Diego used an innovative 3-D printing technology they developed to manufacture multipurpose fish-shaped microrobots -- called microfish -- that swim around efficiently in liquids, are chemically powered by hydrogen peroxide and magnetically controlled.
Nina Nadine Ridder

Earth's extremes point the way to extraterrestrial life - 1 views

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    Seems a little speculative but pretty interesting thoughts. In regards to terraforming Mars this might be of interest:
    "During the daytime, plant-like microorganisms on a Martian-like surface could photosynthesize hydrogen peroxide. At night, when the atmosphere is relatively humid, they could use their stored hydrogen peroxide to scavenge water from the atmosphere, similar to how microbial communities in the Atacama use the moisture that salt brine extracts from the air to stay alive."
Ma Ru

An intellectually challenging game of loop - 3 views

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    In case you are looking for inspiration for a new piece of ACT's meeting room furniture...

    "This is almost an example, not of mathematics but how mathematics changes when it becomes physics"
jcunha

Introducing A Brain-inspired Computer [IBM TrueNorth] - 0 views

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    Built in Silicon technology (Samsung's 28 nm process), its power is measured as one million neurons and 256 million synapses. It contains 5.4 million transistor being the largest IBM chip in these terms. All this said, it consumes less than 100 mW!!

    "These systems can efficiently process high-dimensional, noisy sensory data in real time, while consuming orders of magnitude less power than conventional computer architectures." IBM is working with initLabs to integrate the DVS retinal camera with these chips = real time image neuro-like image processing.

    In what seems to be a very successful project hugely funded by DARPA, "Our sights are now set high on the ambitious goal of integrating 4,096 chips in a single rack with 4 billion neurons and 1 trillion synapses while consuming ~4kW of power."
Ma Ru

ISS astronauts bite into space-grown lettuce - 0 views

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    Next great step for humankind.

    "... and we're standing by now for the first consumption of one of these red romaine lettuce leaves ..." :-)
jcunha

Portable ultra-broadband lasers could be key to next-generation sensors - 0 views

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    Quantum Cascade Lasers are rising in the mid-infrared region, the so-called fingerprint zone of the electromagnetic spectrum for a whole bunch of chemical species that we are most of times interested in sensing. One more sign of the underlying importance of this technology comes just by seeing NSF, USHS, Naval Air Command and NASA as the main monetary contributors to this research.
Juxi Leitner

Robots to the Rescue!: JPL's RoboSimian and Surrogate Robots are here to Help - 3 views

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    Robots to the Rescue!: JPL's RoboSimian and Surrogate Robots are here to Help
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    Also many other interesting videos of the Karman Lectures
Nina Nadine Ridder

Surprising similarity in fly and mouse motion vision - 2 views

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    Loosely related to an old ACT project on optical flow (if I remember correctly but even if not still an interesting read I think):

    "At first glance, the eyes of mammals and those of insects do not seem to have much in common. However, a comparison of the neural circuits for detecting motion shows surprising parallels between flies and mice. Scientists have learned a lot about the visual perception of both animals in recent years."
Nina Nadine Ridder

NASA discovers Earth-like planet orbiting 'cousin' of Sun - 1 views

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    Astronomers hunting for another Earth have found what may be the closest match yet, a potentially rocky planet circling its star at the same distance as the Earth orbits the Sun, NASA said Thursday.
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