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US Physics (Edelman)
Chapter 5 Intensities
22
Physics
Professional
06/20/2011

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Term
Spatial Intensity
Definition
refers to distance or space
Term
Peak Intensity
Definition
the maximum value
Term
Average Inensity
Definition
The mathematical middle value
Term
Temporal Intensity
Definition
refers to all time, transmit (pulse duration) and receive.
Term
Pulsed Intensity
Definition
refers only to the transmit time
(pulsed is the average intensity for the pulse duration only ) it does not include the listening time
Term
Spatial Peak Intensity
Definition
The beams intensity at the location where it is maximum.
Term
Spatial Average Intensity
Definition
The average intensity across the beam's entire cross-sectional area.
Term
Temporal Peak Intensity
Definition
measuring the intensity of the beam at the instant in time of its maximal value
Term
I
max
Definition
the average intensity during the most intense half-cycle
Term
Pulse Average Intensity
Definition
the average intensity during the pulse duration (transmit time)
Term
Temporal Average Intensity
Definition
averaging the intensity during the entire pulse repetition period (transmit and receive time)
Term
I
sptp
Definition
measured at the location where intensity is maximum, and at the instant in time that the most powerful part of the pulse passes
Term
I
sppa
Definition
measured at the location where intensity is maximum, averaged over the transmit time (pulse duration)
Term
I
spta
Definition
measured at the location where intensity is maximum and average over all time both transmit and receive time
Term
I
sata
Definition
measured over the entire cross-sectional area of the sound beam, and over all time
Term
All intensities have units of
Definition
Watts/cm 2
Term
SPTP
Definition
spatial peak,temporal peak
Term
SATP
Definition
spatial average, temporal peak
Term
SPTA
Definition
spatial peak, temporal average
Term
SATA
Definition
spatial average, tgemporal average
Term
SPPA
Definition
spatial peak, pulse average
Term
SAPA
Definition
spatial average, pulse average
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