where fo =
observed or perceived sound frequency (Hz)
vo = velocity
of observer (m/s)
vs = velocity
of source (m/s)
v = velocity
of sound in the medium (m/s)
w = velocity
of the wind in the direction of sound propagation (m/s)
fs =
frequency of the source (Hz)
Electromagnetic
Waves
fo =
fs (sqrt[(c + vr) / (c - vr)])
where fo =
observed or perceived electromagnetic wave frequency (Hz)
fs =
frequency of the source (Hz)
vr = velocity
of source relative to the observer (m/s)
c = speed of
light in vacuum (3e8 m/s)
See also:
More Articles;
Reference Tables;
Math Used in ECE
