Sound
The units used to report the pressure of a sound beam?
What are pascals.
Two items that are not associated.
What is unrelated.
The time it takes a wave to vibrate a single cycle, or the time from the start of one cycle to the start of another.
What is period?
The actual time from the start of a pulse to the end of that pulse.
What is pulse duration?
Refers to distance or space.
What is spatial.
The event that occurs when two waves are traveling in a medium and arrive at a location at the same time.
What is interference.
Two items that are associated or affiliated.
What is related/proportional.
The number of particular events that occur in a specific duration of time.
What is frequency?
The distance that a pulse occupies in space from the start to the end of a pulse.
What is spatial pulse length?
Refers only to the transmit time. (pulse duration)
The type of waves that will exhibit both constructive and destructive interference?
What are waves of different frequency?
Two items that are associated such that when one item increases, the other increases.
What is directly related/directly proportional.
The frequency that is ultrasonic.
What is greater than 20,000 Hz.
The time from the start of one pulse to the start of the next pulse.
What is pulse repetition period?
Refers to all time, transmit (pulse duration) and receive.
What is temporal?
Waves transfer what from one location to another?
What is energy.
Two items are associated such that when one item increases, the other decreases.
What is inversely related/inversely proportional?
The difference between the maximum value and the average or undisturbed value of an acoustic variable.
What is amplitude?
The number of pulses that an ultrasound system transmits the body of each second.
What is pulse repetition frequency?
The intensity of the beam at the instant in time of its maximal value.
What is temporal peak intensity?
A series of compressions and rarefactions
What are sound waves?
When two numbers with a reciprocal relationship are multiplied together, the result is one.
What is a reciprocal relationship.
The concentration of energy in a sound beam.
What is intensity?
The percentage or fraction of time that the system transmits a pulse.
What is duty factor?
The beam's intensity at the location where it is the maximum.
What is spatial peak intensity?