jet property. Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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jet property. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

There are many experiments showing that in a fast flow of water (and air jets) the pressure is less than in the environment. These experiences have often been described, and perhaps you know them well. You have heard that a table tennis ball easily dances on a stream of air if you blow it from below with a small tube, that two pieces of paper located side by side approach each other if you blow between them, that a ball on a thread, if brought to a stream of water, sticks To her?

jet property

Try to do a similar experiment with a teaspoon, holding it loosely with two fingers and bringing the convex part to a strong stream from a water tap. It will stick to the jet so much that it will take effort to tear it off.

Author: Rabiza F.V.

We recommend interesting experiments in physics:

▪ Experience with the center of gravity of the human body

▪ Modeling propellers

▪ We heat the water

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Random news from the Archive

Cold is more dangerous than heat 08.06.2015

Scientists have found that 20 times more people die from cold than from heat.

It is generally accepted that high temperatures have a detrimental effect on the body - they make the heart fail, increase blood pressure and cause dehydration. And many doctors call winter weather optimal for health and beauty. A large-scale study conducted by a group of scientists from different countries proves that everything is exactly the opposite.

Experts studied 74 million deaths that occurred from 1985 to 2012 in 384 different locations in 13 countries. The climate in them ranged from temperate to subtropical. The scientists collected data on average temperature, humidity and air pollution levels to understand what kind of weather people are least likely to die in.

Of all the deaths studied, an average of 7,71% was directly caused by abnormal temperatures for a particular region. In some countries, such as Thailand, Brazil and Sweden, this figure was lower at 3%, and in China, Italy and Japan - as much as 11%. Scientists were surprised to find that out of the total number of "weather" deaths, 7,29%, were associated with cold. Only 0,42% of people died due to the heat.

Another surprise was that extreme temperatures were responsible for only 1% of deaths, and the rest occurred with slight drops or increases in thermometer readings. According to the authors of the study, health services are usually activated only during the heat, but they clearly need to be more attentive when the onset of cold weather, even if small.

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