How did the first reconnaissance satellites transmit photographs? Detailed answer

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How did the first reconnaissance satellites transmit photographs? Detailed answer

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How did the first reconnaissance satellites transmit photographs?

In the first series of American and Soviet reconnaissance satellites, recording was carried out on ordinary film. After filling, the container with the film was dropped to Earth. Capsules from the American satellites "Corona" were able to both land and splash down, and could also be caught by an aircraft right in the air. The containers from the Soviet satellites "Zenith" were equipped with an auto-detonation system if it landed on foreign territory.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

How does seaweed grow?

If you had an aquarium at home, you probably noticed that a greenish coating appeared on its surface, as if from nowhere. This is algae. And when you bathed in some ponds and lakes, some plants stuck to your feet. It's also algae. There are thousands of types of algae, and they grow all over the world: in swamps, ponds, lakes, rivers, and even oceans. Their sizes are different: from the smallest porous microorganisms to dense strong marine plants, reaching 30 meters in length.

Algae are one of the most primitive forms of plant life. Some of them consist of one independent cell. Others are connected in long chains, others form a whole network of cells. Some separate and form new colonies.

Algae contain chlorophyll, which helps them absorb sunlight and produce their own nutrients. In this, algae differ from fungi, their related plants.

The most widespread are green algae, which we observe in a quiet pond in the form of a greenish coating on the surface of the water. In addition to chlorophyll, some giant algae and kelp (brown algae) contain a yellowish-brown pigment. The stems of some brown algae are so strong and durable that they are used to make ropes and ropes from them, iodine is obtained from part of the algae.

Red algae - very beautiful marine plants, delicate in shape, have a different red color. There are so many of them that sea water acquires a reddish hue, as, for example, in the Red Sea.

Diatoms have tiny scales. After the death of the algae, these scales sink to the seabed, forming deposits up to several meters thick.

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Random news from the Archive

desert crocodiles 09.09.2002

Biologists were struck by an unexpected discovery: in the south of the Sahara, in Mauritania, several groups of crocodiles were found.

Irish zoologist Tara Shine examined the temporary reservoirs of the Mauritanian part of the Sahara, filled with rare rains, and then dry up. In 19 percent of them, Shine was surprised to find crocodile populations. By all indications, these are Nile crocodiles, differing only in small size: the length of an ordinary Nile crocodile is up to five meters, and a desert one is one and a half meters.

Another feature: Saharan crocodiles do not attack people. Perhaps their small size makes them non-aggressive. Local tribes revere crocodiles as gods of water, so rare in these places. In some places, between the sand dunes and the rocks heated by the sun, you can find temporary swamps overgrown with grass. They store water from six months to four months a year. There are crocodiles. In one swamp there can be from one to three dozen individuals.

What do reptiles do during the dry season? They fall into a kind of hibernation, clog in holes or under stones, almost or completely losing mobility.

Local residents have long told visiting scientists that one can meet a crocodile in the desert, but until now these reports were considered unreliable.

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