Why do seasons change on Earth? Detailed answer

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Why do seasons change on Earth? Detailed answer

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Why do seasons change on earth?

The earth's axis - an imaginary line around which our planet rotates, is inclined to the plane in which the Earth revolves around the Sun, that is, to the plane of the orbit. The plane of the Earth's equator forms an angle of 23° 27' with the plane of the orbit. Therefore, from March 22 to September 22, the Sun rises above the Northern Hemisphere (June, July, August - summer), and from September 22 to March 22 - above the Southern (December, January, February - summer).

If there were no tilt of the earth's axis, there would be no change of seasons, the day would always be equal to the night, and the climate would depend only on the geographical latitude of the area.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

Was there a bird that looked like a dodo?

In some countries there is an expression "died like a dodo". Or, when a person acts stupidly, he is called a dodo. Let's find out why the dodo is a symbol of something withering and stupid.

Hundreds of years ago, on the island of Mauritius and other islands of the Indian Ocean east of Madagascar, there really lived a bird called the dodo. She had no enemies to protect herself from, which is why she did not develop any of the abilities that other birds have. She couldn't fly, or run fast, or defend herself.

As a result, she turned into a rather unusual creature. The bird was a relative of the pigeon family, but there was no resemblance in sight. She had a large body, round and fat, like two turkeys. And the legs were so short that they could barely support the weight.

The tail of the dodo was only a small bundle of fluffy feathers, absolutely useless. The wings of the bird (since there was no need to fly) became very small and could not perform this function at all. The head of the dodo was very large and ended in an unimaginable hook-shaped beak. The only way the bird could move was to waddle slowly.

In 1507, Portuguese explorers landed on the island of Mauritius and discovered this strange creature. Since the bird looked funny and couldn't defend itself, they named it duodo, which means simpleton. They discovered that it was possible to beat birds with clubs. Their nests were in a heap of grass, where they laid only one large egg.

Later, people brought pigs to the island, which destroyed the eggs of dodos and their chicks, and by 1681 the bird was completely exterminated.

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Smart Refrigerator LG Smart InstaView 09.01.2017

LG Electronics (LG) has unveiled its Smart InstaView refrigerator running the webOS operating system.

The main feature of the novelty is a giant touch screen with a diagonal of 29 inches, mounted in one of the doors. In addition, there is a Wi-Fi wireless adapter for connecting to the Internet.

Through the screen, you can view recipes, leave notes for family members, make a to-do list and set reminders. Implemented support for Amazon Alexa voice assistant.

Inside the refrigerator is a 2-megapixel camera with ultra wide-angle optics. The image from it can be displayed on the screen, which allows you to "look" inside Smart InstaView without opening the door. In addition, pictures from the camera can be sent to a mobile device.

The novelty is made in accordance with the Door-in-Door concept ("door-in-door"): it provides for an additional door, discreetly built into the main door. This makes it easier to access the most frequently needed products, and also helps to reduce the loss of cold air from the main refrigerator compartment. In addition, Door-in-Door technology helps keep food fresh for much longer by reducing temperature fluctuations.

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