Acoustic dispersion

When a sound wave passes through a solid medium (e.g. ice), high and low frequencies separate. Being faster, the high-frequency waves travel ahead of their low-frequency counterparts. As a result, you may hear a gap between the high notes and the low notes contained in the same sound.
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And you can have fun with physics, too.
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This hydroponic farm in the Australian desert uses solar panels to desalinate sea water and grow tomatoes.
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Abraham Lincoln and George McClellan after the
Battle of Antietam in 1862.
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Republican Assault Guard in Barcelona during the Spanish Civil War, 1936.
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Runway introduced the new Vid2Vid artificial intelligence model Gen-1, with which you can change the style and composition of video by picture or text query
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Luigi Di Michele set a record by bursting 38 balloons with a shot from a block bow 🏹
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How a bird makes a nest
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How to make a paper airplane
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U.S. counties without a single African-American
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Beretta m9a3

- Caliber: 9x19
- Barrel length: 125 mm
- Overall length: 216 mm
- Height of gun: 137 mm
- Maximum width of the gun: 38 mm
- Width of gun at the grip: 33 mm
- Weight without ammo: 961 g.
- Magazine capacity: 10, 15 or 17 rounds
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Demonstration of surface tension
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How Americans are born

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The concept of the city of the future Woven City, which Toyota plans to build near Mount Fuji.
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