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    Near-Infrared Sensitivity tagged posts

    Webb captures Neptune’s auroras for first time

    March 27, 2025, Categories  Astronomy/Space

    NASA's Webb captures Neptune's auroras for first time
    Credit: Webb Space Telescope

    Neptune lies in the frigid, dark, vast frontier of the outer edges of our solar system, about 3 billion miles away from the sun.

    For the first time, NASA’s James Webb Space Telescope has captured bright auroral activity on Neptune. Auroras occur when energetic particles, often originating from the sun, become trapped in a planet’s magnetic field and eventually strike the upper atmosphere. The energy released during these collisions creates the signature glow.

    In the past, astronomers have seen tantalizing hints of auroral activity on Neptune, for example, in the flyby of NASA’s Voyager 2 in 1989. However, imaging and confirming the auroras on Neptune has long evaded astronomers despite successful detections on Jupiter, Saturn, and Uranus...

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    Researchers introduce Transparent Optical Imager with Near-Infrared Sensitivity and Touchless Interface

    July 18, 2023, Categories  Physics, Technology/Electronics

    A transparent optical imager with near-infrared sensitivity and a touchless interface
    a, Schematic of a large-area, 16 × 16 visually transparent NIR-sensitive OPD array (imager) that is placed in front of a laptop display. b, Schematic of the touchless user interface demo using NIR-emitting penlight. c, Photograph of the touchless user interface demo using NIR-emitting penlight. d, Schematic of a large-area, 16 × 16 visually transparent NIR-sensitive OPD array (imager) with integrated NIR LEDs that is placed in front of a laptop display. e, Schematic of the touchless user interface demo using gesture recognition of reflected NIR light. f, Photograph of the touchless user interface demo using gesture recognition of reflected NIR light. Credit: Nature Electronics (2023). DOI: 10.1038/s41928-023-00970-8

    Most existing devices are operated via the sense of touch,...

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