Page 198 - text book form physics kssm 2020

Applications of Refl ection of Waves in Daily Life CAREER
iNFO
Th e phenomenon of refl ection of waves can be applied in our
daily lives. Figure 5.31 shows some examples of the application Offi cers of Science (Physics)
of refl ection of waves. in the diagnostic imaging
and radiotherapy division
in hospitals maintain and
callibrate all apparatus that
produce electromagnetic and
sound waves so that they are
safe to use.

Ultrasonic waves are used in the
medical fi eld to examine a foetus
or other internal organs.

Radio waves from communication satellites are
refl ected by the parabolic dish and focussed onto
the antenna on the feed horn.

Transducer Technology of ultrasonic refl ection which is known as
SONAR helps to detect areas which have a lot of fi sh.
Transducer transmits waves into the water and these waves
are refl ected by the fi sh to the transducer.

Receiver of Transmitter of
reflected incident waves
waves

Patterns of refl ected sound waves caused by diff erent
rocks enable the location, depth and structure of
the seabed which contain sources of natural gas
to be identifi ed.

Figure 5.31 Applications of refl ected waves in daily life
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5.3.3