What is the main benefit of bees? Detailed answer

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What is the main benefit of bees? Detailed answer

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What is the main benefit of bees?

The main contribution of bees to providing people with food is not the honey they produce.

With all the indisputability of its benefits and healing properties, the activity of bees in pollinating plants is much more significant. Without the help of these pollinating insects, neither the clover, nor the cucumber, nor the apple tree, nor the cherry, nor the buckwheat, nor the sunflower would simply be able to realize their biological potential.

Thanks to pollination, crop yields double or even triple. The resulting profit exceeds, according to experts, tens of times the income from direct beekeeping products. Twice as many berries ripen in those forests where there are apiaries, which accordingly increases the number of forest game.

This was well understood by the Russian Empress Catherine II, who abolished all taxes for beekeepers. Nowadays, in many countries, in particular in Germany and the USA, there are beekeeping support programs as one of the most effective ways to increase plant yields.

For example, a manager of one of the American commercial companies, who delivers beehives to farms in his spare time, receives 39 thousand dollars a year from the federal authorities.

Author: Kondrashov A.P.

Random interesting fact from the Great Encyclopedia:

How did ancient astronomers imagine the universe?

As strange as it sounds, the more we learn about the universe, the harder it becomes for us to imagine it. Today we know that this is not only the Earth and other planets of the solar system, but also a galaxy that includes our solar system - the "Milky Way" - as well as other galaxies. Only in our galaxy there are about 200 stars, and how many more there are in others. The human mind is simply incapable of grasping something so immense!

However, in ancient times there was a very primitive idea of the universe. People believed that the sun, moon, stars and planets were just small bodies revolving around the Earth. They thought that the universe is what they wanted to see it, that is, in its center is a huge, flat, motionless Earth, and above it stretches the dome of the sky, strewn with thousands of small lights.

For the first time, the beginnings of the true doctrine of the universe appeared in ancient Greece. Most Greek astronomers still believed that the Earth was stationary and at the center of the universe. However, the famous scientist Pythagoras already in the VI century BC. e. suggested that the earth is spherical. Aristarchus, who lived in the III century BC. e., believed that the Earth rotates around its axis, while revolving around the stationary Sun. One hundred years later, another ancient Greek astronomer - Ptolemy - wrote a book called "Almagest".

Returning to the erroneous claim that the earth is at the center of the universe, he tried to portray the orbit of the sun and the paths of other planets as supposedly in continuous motion around the earth. The picture of the universe he created dominated European science for many centuries.

It was not until 1543 that Copernicus again put forward the idea that the sun was the center of the universe. Then came the invention of the telescope, and the development of astronomy accelerated dramatically. Gradually, as mankind learned more and more about the universe around us, modern ideas about it developed.

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Vibration feeds the sensor 20.08.2006

Scientists from the USA have made a hydrogen sensor that receives energy from vibration.

Hydrogen is highly explosive, but it has no color or odor. Therefore, it is possible to detect its leakage only with the help of sensors, the need for which will increase with the development of hydrogen energy. And then the problem of batteries for these sensors will arise: it is very tedious to change them from time to time in dozens of devices.

"We have been able to create a sensor that works without batteries," says Associate Professor Lin Yongshan from the University of Florida. The sensitive element of the sensor is made of nanowires - zinc oxide whiskers, through which an extremely small electric current flows. The conductivity of these wires is the higher, the more hydrogen is in the ambient air.

The microcontroller converts the information about the conductivity of the whiskers into gas concentration data and sends a radio signal to the central processor of the system. And he is already monitoring the situation. The energy source for the sensor is a piezocrystal, which converts into electricity the vibration of the mechanism on the surface of which the sensor is glued, for example, a pump or engine part.

Tests have shown that the sensor is very sensitive, it is able to detect even 10 hydrogen molecules among a million air molecules, and transmits information over a distance of 20 meters.

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