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World’s fastest radio controlled glider sets a speed record at 882 km/h.
California resident Spencer Lisenby recently broke the world speed record for RC glider using dynamic soaring - 882 km/h.
The speed of flight slows down when the glider is on the downwind side of the hill, where the air flow drops. Here the device falls into a zone of turbulence. As a result, the glider can accelerate to about the speed of a tailwind when flying down, and slow down on the way back, gaining energy and speed on each turn.
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California resident Spencer Lisenby recently broke the world speed record for RC glider using dynamic soaring - 882 km/h.
The speed of flight slows down when the glider is on the downwind side of the hill, where the air flow drops. Here the device falls into a zone of turbulence. As a result, the glider can accelerate to about the speed of a tailwind when flying down, and slow down on the way back, gaining energy and speed on each turn.
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@QuiteInterestingInformation
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This is an 1896 video of residents of the city of Lyon playing snowballs. The film, which is 124 years old, was colored and adjusted to the playback speed as if it was filmed in our time
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Kidney Bioengineering
Scientists have created a functional replacement for the human kidney based on rat kidney cells.
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Scientists have created a functional replacement for the human kidney based on rat kidney cells.
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Lovers’ Bridge on the Canal du Vasse, Annecy, Haute-Savoie, 1992. Photo by Jean Gaumy.
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Nobody painted these glowing pink springhares—their Day-Glo is all natural.
🔴 Glowing lights in nature aren’t limited to fireflies and glowworms. A new study published in Nature last month discovered vivid pink biofluorescence in two different species of springhares, both found on the African continent.
🔴 Biofluorescence generally describes the process during which particles in an organism’s tissues absorb short-wavelength, high-energy light, and after keeping some of that energy for itself, shoots the wave back out at a lower energy and thus a longer wavelength. Short wavelengths like UV and blue light go in, then are emitted as longer wavelengths of red, orange, yellow, and green light.
🔴 This colorful light show has been observed in fireflies, fish, reptiles, amphibians and birds. Three groups of nocturnal mammals—New World flying squirrels, New World marsupial opossums, and the monotreme duck-billed platypus—have also displayed biofluorescence in previous studies.
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@QuiteInterestingInformation
🔴 Glowing lights in nature aren’t limited to fireflies and glowworms. A new study published in Nature last month discovered vivid pink biofluorescence in two different species of springhares, both found on the African continent.
🔴 Biofluorescence generally describes the process during which particles in an organism’s tissues absorb short-wavelength, high-energy light, and after keeping some of that energy for itself, shoots the wave back out at a lower energy and thus a longer wavelength. Short wavelengths like UV and blue light go in, then are emitted as longer wavelengths of red, orange, yellow, and green light.
🔴 This colorful light show has been observed in fireflies, fish, reptiles, amphibians and birds. Three groups of nocturnal mammals—New World flying squirrels, New World marsupial opossums, and the monotreme duck-billed platypus—have also displayed biofluorescence in previous studies.
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@QuiteInterestingInformation
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