How do spiders travel great distances through the air? Detailed answer

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How do spiders travel great distances through the air? Detailed answer

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How do spiders travel great distances through the air?

Spiders, especially young light individuals, are capable of ballooning. Having gone out into the open area, the spider lifts its abdomen up and releases several threads, from which it usually makes a web. But in this case, the threads form a semblance of a parachute and allow the spider to glide in the air currents. Usually the range of such a journey does not exceed a few meters, but sometimes spiders can be carried very far, which allowed them to colonize any corner of the land on the planet and the most remote islands.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Why does the moon follow us when we drive?

The Moon may not seem very far from us, but its average distance from Earth is 239 miles. The diameter of the moon is 000 miles, which is less than the length of the United States from coast to coast. But if you look at the Moon with a very powerful telescope, it looks like it's no more than 2160 miles away. Because the Moon seems so close and large to us, we sometimes forget that 200 miles is quite a distance. It is this huge distance that explains why when we drive a car and look at the moon, it seems to us that it is following us.

First of all, it must be said that it just seems to us - it's just a feeling, a psychological reaction. As we race along the road, we notice everything flying past us in the opposite direction: trees, houses, fences, the road. And we also expect the Moon to fly past us, or at least go back, the further forward we go. When this does not happen, it seems to us that she is "chasing" us.

But why is it so? From the fact that the distance from the Earth to the Moon is very large. Compared to the distance our car travels in a few minutes, this distance is enormous. Therefore, when we drive, the angle at which we see the Moon remains almost unchanged. Indeed, we can travel in a straight line for a long, long time, and the angle at which we see the Moon will remain practically unchanged. And while everything flies past us, the feeling that the moon "haunts" us remains.

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Over 10Gbps speed shown for 5G on the move 27.07.2018

NTT DoCoMo, AGC and Ericsson successfully field-tested fifth-generation (5G) mobile communications technology in a vehicle driven at high speed in Japan.

During testing, the frequency range of 28 GHz was used. The vehicle was equipped with special antenna modules mounted on glass surfaces. In total, experts used eight such modules - on the side windows, windshield and rear windows. This ensured the reception of signals from any direction.

The tests were carried out on a section of the road with a length of 2,2 kilometers. 5G mobile equipment was installed in the car, and three stationary base stations were installed on the territory of the test zone.

As a result, it was possible to show throughput at the level of 8 Gbit / s when the car is moving at speeds up to 100 km / h. Moreover, the bandwidth of the channel reached 11 Gb / s while reducing the speed of the car to 30 km / h.

Thus, tests have shown that 5G networks will provide connected cars and self-driving vehicles with ultra-fast communication channels. This will usher in an era of completely new services and telematic services.

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