What was the first mammal? Detailed answer

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What was the first mammal? Detailed answer

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What was the first mammal?

In 1999, a perfectly preserved skeleton of an ancient mammal, which is approximately 120 million years old, was found in the Chinese province of Liaoning. This is a real chimera, an intermediate link between reptiles and mammals: the front part of the skeleton of a small animal looks like a rat, and the hind legs, tail and pelvic bones are like those of a lizard.

The oldest previously known mammals are 20-40 million years younger.

Author: Kondrashov A.P.

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How much does a person eat and drink?

For all his life, a person eats an average of 70 thousand cutlets and 35 thousand buns. For a year, he drinks 750 liters of water and eats about 40 tons of all kinds of food.

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General Atomics Aeronautical Systems specialists have developed a technology that allows you to shoot high-definition video using a synthetic aperture radar. This is a significant achievement that dramatically expands the capabilities of military equipment. Such radars can revolutionize military affairs, as thermal imagers did in their time.

The unique technology, called VideoSAR, has already been tested on the popular Lynx Block 20A radar weighing about 50 kg. This radar is mainly used on reconnaissance aircraft, such as the U-21, and on the MQ-9 Reaper strike UAV. The VideoSAR system based on the Lynx Block 20A provided continuous 1080p video transmission. Prototype testing took place from a King Air 200 aircraft and took place on March 25, 2013 in Ramon, California. During testing, VideoSAR was able to film a wide range of stationary and moving vehicles in high resolution, a milestone in the development of radar. Moreover, VideoSAR has a mode of automatic detection of moving targets, and the radar reliably captures even those objects that are moving at low speed. At the same time, a radar video review of the surrounding area is preserved.

Perhaps the layman cannot fully appreciate the importance of this achievement. Until recently, the radar could display information about a radio-contrast target only as a dot on the screen, only relatively recently have radars appeared that allow you to take high-resolution photographs. Now, finally, there is also a compact HD video radar.

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