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    Sur
    Sur@sur_272mo
    💭Science💭Tech
    Radio Hat 1949 Man-from-Mars

    @sur_27In 1949, you could buy a radio built into a pith helmet for $7.95. Called the “Man-from-Mars Radio Hat,” it had two vacuum tubes, a loop antenna, and a battery pack, picking up stations within a 20-mile (32 km) radius. A fascinating piece of early wearable tech.

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    Radio Hat 1949 Man-from-Mars

    @sur_27 的照片· Jun 19, 2026· Science

    关于这张照片

    The image features a woman in a dark coat and white blouse, wearing a distinctive light-colored helmet with antennae on top and a ring-like protrusion on the right side. She is seated on a bench, examining a small object in her hands. The background appears to be a cityscape with trees and buildings. The overall aesthetic is vintage and monochromatic. There is no on-screen text visible.

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    Jupiter James Webb TelescopeJupiter James Webb TelescopeµBites cookies made from plastic wasteµBites cookies made from plastic wastePluto 1994 vs 2019Pluto 1994 vs 2019The Needle GalaxyThe Needle Galaxydark matter wormhole Milky Waydark matter wormhole Milky WayVenus Aerospace Rotating Detonation Engine Test StandVenus Aerospace Rotating Detonation Engine Test StandMeme question posedMeme question posedClosest image ever taken of JupiterClosest image ever taken of Jupiterfirst ever image of a Single Photonfirst ever image of a Single Photondark energy evolution clues from Pantheon+dark energy evolution clues from Pantheon+Night vision eyedrops trial results2Night vision eyedrops trial resultsWalter Lewin on physics classesWalter Lewin on physics classesNikola Tesla solitude quoteNikola Tesla solitude quoteUniverse looping every 500 billion years2Universe looping every 500 billion yearsMax Planck portraitMax Planck portraitFeynman divorce complaint CalculusFeynman divorce complaint CalculusThe CuriesThe CuriesJean and Ororo moment2Jean and Ororo moment
    照片
    Sur
    Sur@sur_272mo
    💭Science💭Tech
    Radio Hat 1949 Man-from-Mars

    @sur_27In 1949, you could buy a radio built into a pith helmet for $7.95. Called the “Man-from-Mars Radio Hat,” it had two vacuum tubes, a loop antenna, and a battery pack, picking up stations within a 20-mile (32 km) radius. A fascinating piece of early wearable tech.

    查看原帖

    Radio Hat 1949 Man-from-Mars

    @sur_27 的照片· Jun 19, 2026· Science

    关于这张照片

    The image features a woman in a dark coat and white blouse, wearing a distinctive light-colored helmet with antennae on top and a ring-like protrusion on the right side. She is seated on a bench, examining a small object in her hands. The background appears to be a cityscape with trees and buildings. The overall aesthetic is vintage and monochromatic. There is no on-screen text visible.

    查看Science的全部照片

    ?

    还没有评论。来抢沙发吧！

    更多Science照片

    查看Science的全部照片
    Jupiter James Webb TelescopeJupiter James Webb TelescopeµBites cookies made from plastic wasteµBites cookies made from plastic wastePluto 1994 vs 2019Pluto 1994 vs 2019The Needle GalaxyThe Needle Galaxydark matter wormhole Milky Waydark matter wormhole Milky WayVenus Aerospace Rotating Detonation Engine Test StandVenus Aerospace Rotating Detonation Engine Test StandMeme question posedMeme question posedClosest image ever taken of JupiterClosest image ever taken of Jupiterfirst ever image of a Single Photonfirst ever image of a Single Photondark energy evolution clues from Pantheon+dark energy evolution clues from Pantheon+Night vision eyedrops trial results2Night vision eyedrops trial resultsWalter Lewin on physics classesWalter Lewin on physics classesNikola Tesla solitude quoteNikola Tesla solitude quoteUniverse looping every 500 billion years2Universe looping every 500 billion yearsMax Planck portraitMax Planck portraitFeynman divorce complaint CalculusFeynman divorce complaint CalculusThe CuriesThe CuriesJean and Ororo moment2Jean and Ororo moment