Английский язык. Ч.3 (Units 9,10). Ильичева Н.А - 31 стр.

2) … it rotates. Both Galileo and Newton were 3) … of the relativity principle
which states that the laws of physics are the same in all inertial frames.
     At the turn of the century there 4) … some problems with regard to
electronic theory and Newtonian mechanics. Nineteenth century physicists
assumed that light would have a different 5) … in different frames of reference.
The problems were 6) … by Einstein’s introduction of the theory of relativity.
Its first postulate is an 7) … of the Newtonian relativity. It states that the laws of
physics have the same form in all inertial reference frames. The second postulate
refers to the 8) … of the speed of light 9) … the speed of the source or observer.
     Some important 10) … of the theory of relativity are that it has changed the
way we view the world. It gives more 11) … results, especially at very high
speeds. We can no longer regard time and space as absolute 12) … even our
concepts of matter and energy have changed.


Reading


4. Choose the most suitable heading from the list A – G for each part (1–6)
   of the text. There is one extra heading which you do not need to use.
A. Resolution of the complications with regard to electromagnetic theory.
B. Relativistic additions of velocities.
C. Description of mechanical phenomena in inertial reference frames.
D. New properties of the basic mechanical quantities discovered by relativity.
E. The impact of special relativity.
F. Presentation of the theory which did not seem to obey the relativity principle.
G. Observation and measurement of events from inertial and noninertial frames.


(1;…)
     Einstein’s special theory of relativity deals with events that are observed
and measured from so-called inertial reference frames. A reference frame is a
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