👀 Phenomenon of visual perception: afterimage Watch the video to the end: when you see Van Gogh's painting "Starry Night", you will understand the essence of the phenomenon of afterimage and experience it for yourself.

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🐊 Situation in Florida: alligators decided to visit people's homes at night and... rang the doorbell

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🦟 "Iron Dome" from mosquitoes In Israel, they invented the Bzigo mosquito repellent, which finds mosquitoes in a room and illuminates them with a laser for easy extermination.

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⚡ ️ Mighty Mother Nature This is what a lightning strike looks like in slow motion.

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🌊 Niagara Falls, Canada Above the Canadian side of the attraction, you can almost always see a rainbow. It is advisable to arrive before sunset, but not before noon. Don't forget to bring your camera to capture the beautiful scenery.

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🎸 Detachable Guitar Unique folding guitar for traveling, made of solid wood. The patented design allows the guitar to be folded up and carried around in a compact backpack.

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💨 A visual demonstration of how quality ventilation works

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🚗 Hyundai Mobis are testing the e-Corner It allows the wheels to spin through the full 90°. The mechanism connects the wheel itself, its drive, suspension and brakes. Now the car moves sideways, in "crab mode", and even (!) makes a "tank turn".

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🤘 Upgrade your trash can in a grown-up way.

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🔧 Engineers even have a mechanical wrench.

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🌪 Venturi Effect When the velocity of a fluid or gas increases, the pressure in that medium decreases. This phenomenon is known as the Venturi effect and partially explains why forces "pushing" on the track occur near race cars.

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🌊 Will it sink or not at the end? This is not a lake, but the Deadvlei Plateau in the Namib Desert, where after the rains a stark contrast between the red dunes and the sparkling plateau forms.

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🛩 Airplane traffic at Chicago Airport On average, there are about 2,600 takeoffs and landings per day. That's almost 950,000 in a year.

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👹 Krampus Parade in Innsbruck, Austria The Krampus Christmas Parade - the demonic version of Santa Claus symbolizes the punishment of naughty children.

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🕔 If it's cloudy, you can't tell the time A nineteenth century model of a portable sundial.

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🏎 The youngest licensed racer in the world This petite Asian is 5 years old! Shao Ziyang got his license in a racing simulator, breaking into 27th place among the top 10,000 drivers.

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💥 Bouncing Bomb Demonstration This is a special depth bomb for destroying dams invented by the British during World War II.

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🔪 TEC Torch Plate Penetrator A thermite cutting device that few things can resist.

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🚘 The transforming car of the future! In seconds, the car can become right-hand drive and the seats can rotate 180 degrees.

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🌱 Needed unit for cottage gardeners Robot for easy planting of plants from China.

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