BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Which language is the only example of a successful resurrection from the dead? Detailed answer Directory / Big encyclopedia. Questions for quiz and self-education Did you know? Which language is the only example of a successful resurrection from the dead? Hebrew, or Hebrew, ceased to be the medium of everyday communication in the 2nd century, but survived in literary and religious use. At the beginning of the second half of the 19th century, the Zionist movement set the task of making Hebrew colloquial again, and gradually this was done. Hebrew received the status of a state language after the declaration of Israel's independence, today it is used as the first language by several million people, and this is the only example in the history of mankind of the successful resurrection of a language from the dead. Authors: Jimmy Wales, Larry Sanger Random interesting fact from the Great Encyclopedia: What substance is the most common in the world? a) Oxygen. b) Carbon. c) nitrogen. d) water. None of the above. Correct Answer: Perovskite is a mineral compound of magnesium, silicon and oxygen. Perovskite makes up about half of the total mass of our planet. It is from it that the mantle of the Earth mainly consists. At least, scientists think so, but no one has yet been able to take samples confirming this hypothesis. Perovskites are a family of minerals named after the Russian mineralogist Count Lev Perovsky in 1839. Perovskite is a veritable Holy Grail for superconductor researchers, as the material is capable of conducting electricity without any resistance at ordinary temperatures. Thanks to perovskite, the world of "floating" trains and super-fast computers would become a reality. In the meantime, superconductors operate only at uselessly low temperatures (the highest officially recorded to date is minus 135 ° C). In addition to perovskite, the Earth's mantle is believed to be composed of magnesium wustite (a form of magnesium oxide also found in meteorites) and a small amount of shistovite (named after Lev Shistov, a graduate student at Moscow University who synthesized a new form of silica under high pressure in 1959). The mantle is located between the crust and the core of the Earth. It is supposed to be solid, although some scientists believe that the mantle is actually a very slow moving liquid. How do we know all this? After all, even the stones erupted by volcanoes lay no deeper than 200 km from the Earth's surface, and exactly 660 km before the beginning of the lower mantle? To estimate the density and temperature inside the planet, you can send seismic wave pulses down and record the resistance that these pulses had to face. Further, the result obtained can be compared with our knowledge about the structure of minerals, samples of which we have - from the crust and meteorites - and about what happens to minerals under the influence of intense temperatures and high pressure. However, all this - like many other things in natural science - is just another highly scientific guess.
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