- possibility of measuring very small displacements up to a
micrometer; ,s
- absence of electric contacts which render these devices highly reliable where frequent make & break of control circuits is anticipated.
Inductance transducers are very popular & exist in many versions to meet various designs of equipment.
37. /40 мин./ Внимательно прочтите следующие три рассказа и напишите ответы на вопросы.
Matter of a Few Seconds
1. How did T.A Edison make one of his greatest discoveries -the electric bulb? 2. What did Sir Isaac Newton think about while getting his lunch ready? 3. Why was Newton called an absent-minded professor? 4. What, did M.V. Lomonosov study in Germany?
Now I feel I must tell you,how Thomas A.Edison /1847-1931/ made one of his greatest discoveries. It happened like this. One summer evening in 1879 a glow worm sat on a pear which Mr Edison was about to eat. This incident set him thinking for a time. Then he exclaimed joyfully: “Of course! Now 1 know!”, &...the electric bulb was invented...
An Absent-Minded Professor
Sir Isaac Newton /1642-1727/ was what you may call an “absent-minded professor”. One day, when Mrs Newton came home unexpectedly, Sir Isaac Was getting his lunch ready but... apparently he was not thinking of what he was doing; His thoughts were on his corpuscular theory, splitting of light & the law of gravitation. The gravitation constant - he whispered - is the accelaration per second that a mass of one gram causes at a distance of one centimetre - & little he did seem to realize he was holding an egg in his hand. Presently, as he looked at it, steam was coming out of a small pot where his watch'was boiling hard...
A Scientist from a Peasant Family
Mikhail Lomonosov/1711-1765/ was born into a peasant family in a village near Arkhangelsk not far from the sea. In December 1730 he ran away from home, his destination Moscow, to fulfil his dream of studying. By pretending to be the son of a priest, Lomonosov enrolled,in the Slavo-Greek-Latin Academy. He completed the Academy’s eight-year course in just five years & was theh sent to St.PetersbuTg, to the Academy of Sciences’ University there; In 1736 Lomonosov was sent to study in Germany. He studied chemistry, physics, mechanics, mining techniques, & languages, & also began to write poetry. Returhing to.Russia in 1741 he resumed work at the Academy of Sciences. He made a large number of discoveries in various fields of knowledge & was also a leading figure in Russia’s enlightenment.
38. /15 мин./ Парная работа. Используя изученный материал, поговорите С партнером о важных научных Открытиях и об их авторах.
39. Напишите русские эквиваленты следующих английских словосочетаний /5 мин./
a piece of amber, bits of straw, the laws of accelerated bodies, the study of magnetism, the nature of electricity, the ultimate subdivision Of matter, the most essential constituent of matter, the number of negative charges, the number of positive ones, some of its electrons, as a matter of fact, a month’s research, electrician’s wor1c,to this end.
40. /6 мин./ Наложите прозрачную пленку и заполните пропуски в следующих предложениях словом или словосочетанием из
списка, приведенного в конце задания.
1 .The first:..on.electricity was made twenty-two centuries ago.
2. A piece of amber rubbed with fur attracted... 3. Galileo... the laws of pendu-lum & accelerated bodies. 4. It was-the time when the study of magnetism & of electrical...began. 5....rubbing is not essential. 6. Now I want to examine you a little. - I... 7. Positively charged particles are called.,. 8.Gilbert experimented & found that other materials... 9. The atoms of every kind of material are each made up of a ... called a nucleus. 10. Tanker means a cargo ship constructed or adapted for the carriage...of cargoes of an...
a/-phenomena b/ as a matter of fact с/ don’t mind d/ act the same way e/ protons f/ hard core g/ recorded observation h/ light objects i/discovered j/in bulk, inflammable nature. .
41. /5 мин./ Напишите 4 предложения из следующих наборов
