Formulas Flashcards
1
Q
Wavelength
A
Wavelength = propagation speed divided by frequency
2
Q
Frequency
A
Frequency = prop speed divided by wavelength
3
Q
Prop speed
A
Prop speed = frequency x wavelength
4
Q
Impedance
A
Z = density x prop speed
5
Q
Pulse duration
A
PD = number of cycles x period
6
Q
Duty factor
A
DF = PD divided by PRP
7
Q
Spatial pulse length
A
SPL = number of cycles x wavelength
8
Q
Axial resolution
A
AR = 1/2SPL
9
Q
Attenuation coefficient
A
AC = 1/2f
10
Q
Total attenuation
A
TA= AC x path length
11
Q
Half intensity depth
A
HID = 6/f
12
Q
Rayleigh scatter
A
F^4
13
Q
Intensity transmission coefficient
A
ITC = 1- IRC
14
Q
Intensity reflection coefficient
A
IRC = (z2 - z1/z2 + z1)^2
15
Q
Beam uniformity ratio
A
BUR = SP/SA
