Answers

2016-02-08T20:11:15+05:30
May 21, 2015 - A simple explanation of ultrasound (ultrasonics) and its uses in medicine, ... We may think we're good at hearing things but our ears can detect only a ... Human ears can hear sound waves that vibrate in the range from about .... Photo: Examining an airplane engine using ultrasonic, non-destructive testing.
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2016-02-08T20:18:57+05:30
Every aircraft has a transmitter and a receiver.....
When one aircraft transmits ultrasonic waves to find the other aircraft..
And if the other aircraft is within the radar of the signal it will receive the signal and in return it may also transmit waves to confirm... ☺
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