G azərbaycan respublikasi təHSİl naziRLİYİ azərbaycan texniKİ universiteti M. M. QƏNDİLova e. Q. İsmayilova

Words and Phrases

discovery

bit-by-bit development-

in the course of time-

contribution-

accomplished fact-

substance-

lodestone-

rub (v)-

breakthrough-

magnetic field-

induce (v)-

navigation aid-

incandescent-

I. Answer the following questions:

1. 
   How do great discoveries happen?
   
2. 
   What does A.Edison’s caliber do?
   
3. 
   Could Edison’s lamp have been made to produce electric light without magnetism?
   
4. 
   When was the phenomenon of natural magnetism been known?
   
5. 
   Where did magnetism take its name from?
   
6. 
   What is lodestone?
   
7. 
   Who made the first practical use of magnetism?
   
8. 
   What was discovered by Hans Christian Oersted in 1819?
   
9. 
   How did H.C.Oersted find the phenomenon of electromagnetism?
   
10. 
    When did electricity find its practical use?