🇬🇧 Tower Bridge under construction, London, 1889. Colourized
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Vatican
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Automatic coupling of wagons
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GoSun Chillest — compact portable refrigerator powered by solar batteries

GoSun Chillest is an autonomous, portable refrigerator with a volume of 45 liters.

GoSun Chillest can maintain the desired temperature below zero using a compressor and thermostat.

The power consumption does not exceed 45 watts. As a power source, you can use the device's battery, an external power supply, direct current and solar energy. GoSun Chillest is equipped with a solar battery, which, if necessary, can also be used as a table.
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Restored videotape from Jerusalem.1897
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Amazing Dutch kites.
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🇵🇱 Polish resistance members, WWII
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Surface tension, taking soapy water as an example.
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The law of momentum conservation for rotational motion.
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Milky Way. Photo by Daniel Maran.
\#nature
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The interaction of molten salt (800 ° C) with water.
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A cave inside a frozen lake

Iceland
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The University of Maryland has developed a sweater with a print that "hides" humans from recognition systems.

AIs are trained to recognize objects, and the print on the sweater prevents them from doing so using AML methods.
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Internet accessibility in Africa
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Colt Revolver.
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Meeting of two elements
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With this device, you can measure your eyesight yourself.
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