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In vented by Percival Everitt in 1883. The vending machine uses geometry for scanning counterfeit money and coin sizes.

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People were able to find out the earth is a sphere over a 1000 years ago by measuring the length and directions of shadows at the same time.

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The pyramids were built using sleds and pulley systems. They used water to make the base perfectly level.

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NFL football gear are designed to be as safe as possible. The also use a camera on a zip line to capture game footage.

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The ball point pen invented in the 1950's uses a ball that rolls coating it's self in ink and rolling to write. Increased America's literacy rate from 30% to 90%.

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in the 1990's in order to make 3D games , they had to invent ray casting where the camera shoots thousands of rays to see objects. this led up to the first 3D Plat-former Super Mario 64.

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In order to make cartoons in the 1930's people would have to draw thousands of pictures. They also had to layer backdrops and foregrounds

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built in 1936 the hoover dam uses hydraulics to produce energy. It produce almost all the energy for Las Vegas.

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to make to the moon it took years of developing the hardware. they had to get to the moon and back.

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Computers used to be the size of rooms but every year they got smaller, now they are so small that we have quantum computers.

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the Eiffel is and engineering wonder taking may years to make. it was originally going to be a giant guillotine.

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The Brazen Bull was a torture method in witch someone be cooked in a metal bull their screams would travel through a shaft making it sound like a bull. It was invented in Rome and the King used it on it's own inventor.

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Pilgrims had to navigate this boat to reach America. it took many months and deaths.

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The Colosseum was an ancient building used for gladiator fights, it was specially designed for the ruler. it was even flooded with water at one point.

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The native in Australia used boomerangs to hunt animals. Now they are used for fun.

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Many Greek plays used specially fit mask for their performers. most mask were perfectly symmetrical.

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The invention of the wheel is thought to be one of humanity's most important inventions. Without it there would be no cars, computers, gears, and doors.

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Farms keep changing over the years now they have factory farms specialized for optimal meat production. It is the main reason a lot of people go vegan.

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In order to make airplanes the investors had to use extremely light materials. 2 years earlier the New York times posted an article saying it take another 1000 years to make one.

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Cannons used gunpowder to launch heavy metal balls. They were like giant guns.