What are the smallest bones in the human body? Detailed answer

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What are the smallest bones in the human body? Detailed answer

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What are the smallest bones in the human body?

These are the bones located in the middle ear - the hammer, stirrup and anvil. With their help, as well as with the help of other organs, air vibrations (sound) are converted into signals - nerve impulses.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

Who invented the airplane?

Sometimes a discovery begins with an "idea". A person has an idea that people need some kind of mechanism or product, and he begins to "invent" it.

But as for the airplane, or, as they used to say, the airplane, this idea was one of the oldest and most secret for a person. The idea of flying has captivated man since antiquity. One of the most famous legends tells about Icarus, who attached wings to his body with wax and took off! However, as he approached the Sun, the wax melted and Icarus fell and died. But the dream remained. Icarus is a symbol of human striving for new heights.

Leonardo da Vinci, who was not only a great artist, but also an inventor, left behind sketches of an aircraft that used the muscular strength of a person. There were other dreamers who dreamed of the idea of an airplane hundreds of years ago!

The earliest aircraft did not have their own power. They were, in fact, giant kites or gliders. During the XNUMXth century, many experiments were carried out with them.

But no one has succeeded in making a heavier-than-air aircraft with its own power. In fact, it was problematic - is it possible to build such an apparatus at all. The first to prove that this could be done was Professor Samuel Langley of the Smithsonian Institution in Washington. He built two flying machines, each 3,5 meters wide and 4,5 meters long, powered by a 1,5 horsepower steam engine. In 1896, these two models made successful flights. However, a test flight of Langley's life-sized aircraft ended in failure: it crashed on October 7, 1903.

On December 17 of the same year, the brothers Orville and Wilbur Wright managed to make a successful flight in an aircraft heavier than air with its own power. In Kitty Hawk, North Carolina, they made one flight of 30 meters in 12 seconds and the second of 260 meters in 59 seconds. Thus was born the airplane, or plane!

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Computer games for dogs 04.12.2022

If your dog is tired of playing catch-up and tug-of-war, he might be more interested in video games! Hong Kong-based startup Joipaw has developed a series of touchscreen games designed to keep our furry friends' minds active.

The founders of the company hope that video games will bring many benefits to dogs and help prevent a type of dementia known as cognitive dysfunction syndrome (CDS) in dogs.

Dersim Avdar was inspired to create video games for dogs by his own dog, which he adopted in May 2021. The active dog quickly lost interest in puzzles and toys filled with treats and became restless, tearing up furniture and shoes of his owners and going to the bathroom on the floor of the apartment.

The man and his wife quickly realized that these were all symptoms of separation anxiety, and that Kavet (the dog's name) needed extra stimulation when the owners left the house.

Then Avdar read a study from the University of Veterinary Medicine in Vienna, which claimed that if older dogs played games on the touch screen, it could prevent cognitive decline. The paper stated that unlike puppies or young dogs, older dogs are almost never trained or mentally challenged.

So Avdar came up with the idea of creating a special console for dogs, which could serve as a tool for preventive care for older dogs, and would keep hyperactive young dogs busy.

To date, the console supports games like "Bay the Mole", when several moles appear on the screen at the same time, which you need to have time to grab, as well as pinball.

The platform also has the function of tracking the dog when the owner leaves the house. By the way, the owners can also play, and even compare their results with the dog! Joipaw also hopes to include games in the future where dogs can play against their owners.

Right now, all games are still in the testing phase, but they are all designed to be played on a touch screen that you can lick. The Joipaw team notes that dogs can be trained to work with a screen by smearing it with something delicious!

Co-founder Dersim Avdar said that when testing games with nearly two dozen dogs, "the hardest step" was to gradually cut back on the tasty rewards to get the dogs to play on their own. But, when this milestone is overcome, there comes "a magical moment when you see the light in the eyes of animals." By the way, extra treats are given out from the console when the dog wins the game.

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