Lecture 1 - Physics In Ultrasound Flashcards
(33 cards)
1
Q
A shorthand method
A
Scientific notation
2
Q
A non-zero # written in scientific notation has the form:
A
N x 10^k
3
Q
The raise number is called the
A
Exponent
4
Q
The number 10 is the
A
Base
5
Q
A number GREATER THAN TEN
A
Positive exponent
6
Q
A number LESS THAN ONE
A
Negative exponent
7
Q
A numver between one and ten will have an exponent of
A
ZERO
8
Q
10(18)
A
Exa - E
9
Q
10(15)
A
Peta - P
10
Q
10(12)
A
Tera - T
11
Q
10(9)
A
Giga - G
12
Q
10(6)
A
Mega - M
13
Q
10(3)
A
Kilo - K
14
Q
10(2)
A
Hecto - H
15
Q
10(1)
A
Deca - da
16
Q
10(-1)
A
Deci - d
17
Q
10(-2)
A
Centi - C
18
Q
10(-3)
A
Milli - m
19
Q
10(-6)
A
Micro - u
20
Q
10(-9)
A
Nano - n
21
Q
10(-12)
A
Pico - p
22
Q
10(-15)
A
Femto - f
23
Q
10(-18)
A
Atto - a
24
Q
Every measurement has 2 parts
A
Magnitude & unit
• 100 cm
100 - magnitude
cm - unit of measurement
25
Unit of length:
kilometer (km)
meter (m)
centimeter (cm)
26
* is the perimeter of circle & is also expressed as a unit of length (mm, cm or m)
* a distance
Circumference
27
units of area
```
square meter (m2)
square centimeter (cm2)
```
28
Units of volume
```
Cubic meter (m3)
Cubic millimeter (mm3)
```
29
Units of time:
Seconds (s)
| Milliseconds (ms)
30
Units of speed:
Meters per second (m/s)
| Millimeters per microsecond (mm/us)
31
Unit of power
Watts (W)
32
Unit of work
Joule (J)
33
Unit of Acoustic Impedance
rayls
