New Hope for Energy

Recently some ceramic materials have been found to be super conductors. Superconducting ceramics are substances which can transmit electric currents with 110 loss of energy at temperature much higher than conventional superconductors (that is, at th temperature of liquid nitrogen).

One use for the new superconductors would be to replace those" that need the extreme cold of liquid helium — huge superconducting electromagnets used in nuclear magnetic resonance research atomic particle acceleration and research reactors.

Other types of electromagnets made with superconductor

could be used to lower the cost of electric generation and storage.

Such uses may take 10 years of research, a quicker use will probable

be in electronics. .J

Researchers now estimate that tiny but immensely powerful highspeed computers using superconductors may be three to five years away. Further off are 300 m.p.h. trains that float on magnetic cushions which now exist as prototypes but may take at least a decade to perfect. Power lines that can meet a city's electric need with superconductor cables may be even further in the future,

Новая надежда на энергию

Недавно некоторые керамические материалы, как находили, были супер проводниками. Керамика сверхпроводимости - вещества, которые могут передать электрические токи с 110 потерями энергии при температуре намного выше, чем обычные сверхпроводники (то есть, при th температуре жидкого азота).

Одно использование для новых сверхпроводников должно было бы заменить тех", которые нуждаются в чрезвычайном холоде жидкого гелия — огромные электромагниты сверхпроводимости, используемые в ядерном исследовании магнитного резонанса атомные реакторы ускорения и исследования частицы.

Другие типы электромагнитов, сделанных со сверхпроводником, могли использоваться, чтобы понизить стоимость электрического поколения и хранения. Такое использование может занять 10 лет исследования, более быстрое использование будет вероятный быть в электронике.

Исследователи теперь оценивают, что крошечные но очень мощные высокоскоростные компьютеры, используя сверхпроводники могут быть на расстоянии в три - пять лет. Далее прочь 300 поездов m.p.h., которые плавают на магнитных подушках, которые теперь существуют как опытные образцы, но могут занять, по крайней мере, десятилетие к прекрасному. Линии электропередачи, которые могут соответствовать электрическим потребностям города с кабелями сверхпроводника, могут быть еще далее в будущем.

D.I. Mendeleev (1834-1007)

Dmitry Ivanovich Mendeleev is a famous Russian. chemist. He is best known for his development of the periodic ,able of the properties of the chemical elements This table displays that elements' properties are changed periodically when they arc arranged according to atomic weight.

Mendeleev was born in 1834 in Tobolsk, Siberia. He studied chemistry at the University of St. Petersburg and in. 1859 he was sent to study at the University of Heidelberg. Mendeleev returned to St. Petersburg. became Professor of Chemistry at the Technical Institute in 1863. He became Professor of General .Chemistry at the University of St. Petersburg in 1866.Mendeleyev was a well-known teacher, and, because there-was no good Textbook in chemistry at that time, he wrote the. two-Volume ^Principles of Chemistry* which became a classic textbook in chemistry. In this book Mendeleev tried to classify the elements according to their chemical properties. In ,1869 he published his first version of his peri- table .of elements. In 1871 he published an improved version of the periodic table, in which lie left gaps for elements that were not known at that time. His table and theories were proved later when three predicted elements: gallium, germanium, and scandium were discovered. Mendeleev investigated the chemical theory of Solution. He found that the best proportion of alcohol and water in vodka is 40%. He also investigated the thermal expansion of liquids and the nature of petroleum.

1893 he became director of the Bureau of Weights and Measures in St. Petersburg and held this position his death in 1907.