The development of sonar is linked to the invention of the:
A) reflectoscope.
B) hydrophone.
C) supersonic receiver.
D) ultrasonic whistle.
Correct Answer:
Verified
Q12: Bi-stable imaging systems were replaced by grayscale
Q13: The phenomenon of piezoelectricity was discovered by:
A)
Q14: The destructive nature of ultrasound on biologic
Q15: Pythagoras observed:
A) that sound is produced by
Q16: Focused high-energy ultrasound waves are used to:
A)
Q18: A landmark book, The Theory of Sound,
Q19: Who first produced ultrasound images of the
Q20: Francis Fry and Elizabeth Kelly Fry are
Q21: Who is credited with first noting that
Q22: _ can concentrate up to 1000 intersecting
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