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Dictionary

Subduction

Subduction Dictionary of astronomy, letter S In Geology, it is called subduction to the sinking of a lithospheric plate of oceanic nature under an adjacent plate, usually of continental nature. It is a mechanism that conditions the creation of ocean trenches, high pressure and low temperature metamorphism, and the origin of earthquakes whose epicenters are distributed along the Benioff plane.
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Dictionary

Anemometer

Anemometer Dictionary of astronomy, letter A An anemometer is an instrument used to measure wind speed, direction and force. It can be a paddle wheel, which consists of an impeller with oblique blades, or the so-called Robinson, consisting of four hemisphere shaped cups fixed to four radial arms.
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Astronomy

What soviet telescope is this?

A friend has a vintage telescope with a broken lens, I asked him to send me its catalog so I can see if I can buy him a new one, he gave me what looks like a Russian catalog, it seems a soviet tele…
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