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1 dzień temu · Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther they are, the faster they are moving away from Earth. The velocity of the galaxies has been determined by their redshift, a shift of the light they emit toward the red end of the visible ...
1 dzień temu · Largest empires by land area. For context, the land area of the Earth, excluding the continent of Antarctica, is 134,740,000 km 2 (52,023,000 sq mi).. Empires at their greatest extent The home and colonial areas of the world's empires in 1908, as given by The Harmsworth Atlas and Gazetteer. Empire size in this list is defined as the dry land area it controlled at the time, which may differ ...
1 dzień temu · A cross section of the shore-end of a modern submarine communications cable. 1 – Polyethylene 2 – Mylar tape 3 – Stranded steel wires 4 – Aluminium water barrier 5 – Polycarbonate 6 – Copper or aluminium tube 7 – Petroleum jelly 8 – Optical fibers Submarine cables are laid using special cable layer ships, such as the modern René Descartes [], operated by Orange Marine.
1 dzień temu · Two girls in Sweden, Mira in 2020 and Rakel in 1920, travel through time and switch bodies. Trapped in a mysterious cave in the forest; swaps with another person in that cave. White woman and black man. Each night, a teenage girl swaps her body with different people linked to a boy who disappeared in 1991.
