Are there channels on Mars? Detailed answer

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Are there channels on Mars? Detailed answer

Big encyclopedia for children and adults

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Are there channels on Mars?

There are no channels in the usual sense for us. Their discoverer, the Italian astronomer Schiaparelli (1835-1910), saw a network of thin lines on the surface of the planet, although many observers, no less experienced, did not notice them there.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

What information can bees extract from the electrical field of flowers?

During the flight, due to the friction of air on the hairs on the body, they accumulate a positive charge on themselves, and flowers usually have a negative charge. It has long been known that due to this difference, the pollen from the flower literally flies to the body of the bee. But recent experiments have shown that bees and bumblebees can extract useful information from the characteristics of electric fields. For example, a changed field of a plant after a visit by one bee may inform another that there is not yet a new portion of nectar in the flower.

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Random news from the Archive

Nobel Prize for Blue LEDs 08.10.2014

The 2014 Nobel Prize in Physics was awarded to the inventors of high-efficiency blue LEDs.

The prize was awarded to three Japanese scientists: Isamu Akasaki, Hiroshi Amano and Shuji Nakamura. At first glance, a modest achievement, especially against the backdrop of such a sensational Higgs boson. But one should not draw hasty conclusions: the phenomenon of the glow of semiconductors was first recorded at the beginning of the 20th century, but it took almost 100 years to bring this technology to perfection.

Moreover, it was the work of the aforementioned trinity that made it possible to realize the idea of a highly efficient semiconductor light source, because powerful white LEDs basically carry crystals that emit precisely in the blue (less often ultraviolet) range, and the white color of the glow is achieved through the use of special phosphors.

If there is still a long way to go before any practical use of the Higgs boson, and it is not known what it can be, then the fruits of the work of the 2014 laureates are already being used by all of humanity, and the technology continues to improve. Efficiencies of the order of 300 lumens per watt have already been achieved, which is three times the best result of 2005, and this is probably not the limit yet. And the areas of application of high-power white LEDs will only multiply, since today it is the most efficient and economical light source with a good color rendering index.

As noted by the Nobel Committee, "the light of this invention is noticeable in every window of Stockholm." And not far off is the time when he will come to all the cities of our planet.

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