Lesson 3 (Part 2) Flashcards
Period
Is the time it takes for one cycle to occur
What is the unit for a period?
us
What is the formula for period?
T = 1/f
- T = period
- f = frequency
What happens to the period if frequencies increases?
Period decreases
What relationship does period and frequency have?
Inversely proportional relationship
Wavelength
Is the physical length of one cycle
- cycle length
What is the formula for wavelength?
lambda = c/f
- lambda = wavelength
- c = propagation speed
- f = frequency
What is the units for wavelength?
mm
What is the term for speed of sound?
Propagation speed
- acoustic velocity
What are the units for propagation speed? (2)
- m/s
2. mm/us
What is the propagation speed of soft tissue? (2)
- 1540m/s
2. 1.54 mm/us
Where is propagation speed highest?
In solids
Where is propagation speed lowest?
In gases
What happens to the propagation speed if compressibility increases?
It increases
What happens to the propagation speed if the elasticity goes up?
It decreases
