How do vinyl records
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Jet engine in a cross-section

A turbojet engine is a gas turbine engine where the chemical energy of fuel is converted into the kinetic energy of gas jets flowing from the jet nozzle.
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How to use the lawnmower correctly
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When dad is an engineer
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Panther robot drone capable of flying and driving on the ground
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Animals use Earth’s magnetic field for orientation

Lost land animals may not be able to find their way home, but sea animals might. According to the U.S. Geological Survey (USGS), “there is evidence that some animals, like sea turtles and salmon, have the ability to sense the Earth’s magnetic field and can use this sense for navigation.” Though that may sound like science fiction, it’s actually science fact
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Mauser C96 Broomhandle in a wooden holster. Now that’s German Engineering
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Vinyl under a microscope - this is how sound is born

The unevenness of the track causes the needle to vibrate.

Moreover, the record in the photo is able to stereo: the right side of the track is modulated with the signal of the first channel (for the right ear), and the left side is modulated with the signal of the second channel (for the left ear)
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Every day, residents of the United States eat 18 hectares of pizza.🍕
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The youngest mom in the world

Lina Medina in Peru
began for Lina Medina of Peru at 8 months old. At 4 years of age she was fully mature. At age 5, the girl carried and gave birth (by cesarean section) to a boy weighing 2.7 kilograms.
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Magpul X-22 Backpacker shotgun in 22 caliber
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Men and women have different brains

Males have a slightly heavier brain, weighing almost 1,400 grams, while females have an average of about 1,300 grams. Women have more white matter whereas men have more gray one.

The white matter is responsible for the connections between the hemispheres and all parts of the brain. Without it, the brain would not be able to work coherently. Another function of the white matter is to transmit data. Gray matter is responsible for perception of the world, memory, speech, and feelings. It is hard to say who is luckier, but both men and women have their advantages.
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Stirling engine

A thermal machine in which the working body, in the form of gas or liquid, moves in a closed volume, a type of external combustion engine.
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Unsuccessful attempts by U.S. astronauts to navigate the surface of the Moon.
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The cost of starting a business in countries around the world
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The Japanese Alfa-X train can reach speeds of up to 400 km/h.
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Michael Faraday invented the first electric motor in 1821. One of the greatest scientists of the 19th century
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Wave Optics

Light waves are regarded by their nature as electromagnetic waves, possessing all their properties.
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Barcelona
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