2D Flashcards
1
Q
Acoustic impedance (z) = ?
A
Propagation speed x density
2
Q
What happens to the waves in an interference medium?
A
Multiple waves cause irregular waves
3
Q
What happens to a wave in constructive interference?
A
The multiple synchronised waves cause a bigger wave.
4
Q
NZL
A
Near zone length
5
Q
What does PRF stand for?
A
Pulse repetition frequency
6
Q
Why is there no sound in space?
A
There is no medium for it to travel through.
