The moon gradually increases the length of the day on Earth. Free Technical Library News

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The moon gradually increases the length of the day on Earth

09.03.2023

Billions of years ago, a day on Earth lasted less than 13 hours. And it continues to grow constantly. The reason for this is the connection between the Moon and the oceans.

Throughout human history, the Moon has been a ghostly presence above the Earth. Its gravity sets the rhythm of the tides, and its pale glow illuminates the night.

Entire civilizations set calendars on it, and some animals, like dung beetles, navigate in space with the help of sunlight reflected from the surface of the moon.

According to some theories, perhaps it was thanks to the Moon that life appeared on Earth. The eccentric orbit around our planet is also thought to play a role in some important climate systems.

But the moon is also gradually moving away from us.

Performing his perfectly balanced astroballet around the Earth - the Moon rotates, but never completely, we always see only one side of it - it is gradually moving away from our planet. Scientists call this process "lunar recession".

With reflector lasers planted on the lunar surface by the Apollo mission astronauts, scientists have recently been able to accurately measure how fast the moon is retreating.

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Silent phone conversation 21.11.2005

Silently talking on the phone allows a device developed in the United States. It looks like a collar worn around the neck.

Electronics "collar" captures biocurrents generated in the vocal cords and muscles of the larynx during the mental, soundless pronunciation of words. The microcomputer recognizes what is intended and issues unpronounced phrases in a synthetic voice into the communication line.

The device is intended primarily for the military, who need to communicate, but must not give out their presence by voice or are in noisy places, such as in a tank or plane. In the future, peaceful applications are also possible, up to cell phones. But it will not be possible to recognize the caller in this way by voice.

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