Flashcards in Lesson 3 (Part 2) Deck (18)

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1

## Period

### Is the time it takes for one cycle to occur

2

## What is the unit for a period?

### us

3

## What is the formula for period?

###
T = 1/f

- T = period

- f = frequency

4

## What happens to the period if frequencies increases?

### Period decreases

5

## What relationship does period and frequency have?

### Inversely proportional relationship

6

## Wavelength

###
Is the physical length of one cycle

- cycle length

7

## What is the formula for wavelength?

###
lambda = c/f

- lambda = wavelength

- c = propagation speed

- f = frequency

8

## What is the units for wavelength?

### mm

9

## What is the term for speed of sound?

###
Propagation speed

- acoustic velocity

10

## What are the units for propagation speed? (2)

###
1. m/s

2. mm/us

11

## What is the propagation speed of soft tissue? (2)

###
1. 1540m/s

2. 1.54 mm/us

12

## Where is propagation speed highest?

### In solids

13

## Where is propagation speed lowest?

### In gases

14

## What happens to the propagation speed if compressibility increases?

### It increases

15

## What happens to the propagation speed if the elasticity goes up?

### It decreases

16

## What is propagation speed based on?

###
Medium

- and only medium

17

## Stiffness

### Is the resistance to compression

18