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What is an ozone hole? Detailed answer

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What is an ozone hole?

In the stratosphere, approximately from 12 to 50 km above the Earth's surface, there is a layer of air, which contains an increased amount of triatomic oxygen - ozone O, (ordinary atmospheric oxygen forms a diatomic molecule 02). The ozone layer protects all life on the planet from exposure to some of the sun's ultraviolet radiation.

This layer can be destroyed, i.e., the ozone content in it can decrease and its protective effect can be weakened. Probably, this is how the "ozone hole" is formed. It is believed that this is due to the ingress of freons into the atmosphere - fluorine- and chlorine-containing gases, widely used for all kinds of sprays and in refrigeration. At first, this phenomenon was observed only in the region of the South Pole, but then a decrease in the ozone content was also detected over the Arctic.

Author: Mendeleev V.A.

 Random interesting fact from the Great Encyclopedia:

What is the Decameron?

The Decameron is a collection of mischievous medieval erotic short stories presented to the public in 1348 by the Italian writer Giovanni Boccaccio (1313-1375). The name arose due to the fact that, according to the plot, seven women and three men ended up in the same rural house during the plague epidemic and each of them told one story for ten days.

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The range of Philips smart home devices has been replenished with a motion sensor. It belongs to the Hue family and will be available in October for $40.

The sensor is designed to interact with smart lamps and turn on the light when motion is detected. The viewing angles of the device reach 100 degrees, and the range is almost five meters.

The capabilities of proprietary software allow you to significantly expand the options for using the sensor. For example, you can install a Philips smart lamp under the bed or at the door to the bedroom, set its brightness to minimum and set the motion sensor to trigger the time interval corresponding to the dark time of the day. Thus, if someone wakes up at night and wants to go to the toilet or the kitchen, the sensor will detect movement and turn on a dim light that will help the person navigate the room, but will not wake the sleeping person nearby.

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