Английский язык. Ч.3 (Units 9,10). Ильичева Н.А - 19 стр.

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Figure 11.
4. Why can motorists sometimes see on a hot day a mirage of water on the
highway ahead of them, with distant vehicles seemingly reflected in it?
Figure 12.
A. The person would see the outside world compressed into a circle whose edge
makes a 49° angle with the vertical
sin Q
c
= 1,00 = 0,750
Therefore, Q
c =
49°. Beyond this angle, the person would see reflections from
the sides and bottom of the pool or lake.
B. When the reflected rays from the bottom and top surfaces of the oil film are
in phase, constructive interference occurs and an observer sees only one colour
of light for a certain angle and film thickness. If the reflected waves are out of
19
                                      Figure 11.


4. Why can motorists sometimes see on a hot day a mirage of water on the
   highway ahead of them, with distant vehicles seemingly reflected in it?




                                      Figure 12.



A. The person would see the outside world compressed into a circle whose edge
makes a 49° angle with the vertical
sin Qc = 1,00 = 0,750
Therefore, Qc = 49°. Beyond this angle, the person would see reflections from
the sides and bottom of the pool or lake.


B. When the reflected rays from the bottom and top surfaces of the oil film are
in phase, constructive interference occurs and an observer sees only one colour
of light for a certain angle and film thickness. If the reflected waves are out of

                                         19

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