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    Holograms tagged posts

    Scientists Apply Revolutionary 30 Year-Old Principle and Find Black Holes Could Be Like Holograms

    June 8, 2020, Categories  Astronomy/Space, Physics

    What researchers have done is apply the theory of the holographic principle to black holes. In this way, their mysterious thermodynamic properties have become more understandable: focusing on predicting that these bodies have a great entropy and observing them in terms of quantum mechanics, you can describe them just like a hologram: they have two dimensions, in which gravity disappears, but they reproduce an object in three dimensions.

    According to new research, black holes could be like a hologram, where all the information is amassed in a 2D surface able to reproduce a 3D image.

    We can all picture that incredible image of a black hole that traveled around the world about a year ago...

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    Technique makes Holograms highly Efficient, Secure

    May 13, 2016, Categories  Physics, Technology/Electronics

    Holograms projected on a white screen while changing the wavelength of light from blue to red. (Image courtesy of the Capasso Lab)

    Holograms projected on a white screen while changing the wavelength of light from blue to red. (Image courtesy of the Capasso Lab)

    Nanotechnology improves holographic capabilities by encoding light polarization. Holograms are a ubiquitous part of our lives. They are in our wallets — protecting credit cards, cash and driver’s licenses from fraud — in grocery store scanners and biomedical devices. Even though holographic technology has been around for decades, researchers still struggle to make compact holograms more efficient, complex and secure.

    Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences have programmed polarization into compact holograms...

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