11 Electromagnetic waves Flashcards
1
Q
Electromagnetic spectrum
A
- radio
- microwaves
- Infrared
- visible light
- UV light
- X-ray
- Gamma ray
2
Q
Radio
A
- radio
- TV transmission
- bluetooth
3
Q
Microwaves
A
- microwave oven
- wifi
- satellite
- mobile phone
4
Q
Infrared
A
- remote control
- night vision
- electric grill
5
Q
Visible light
A
- photography
- vision
6
Q
UV light
A
- sterilizing water (kill bacteria)
- detecting fake bank notes
7
Q
X-ray
A
- medical imaging
- security scanning
8
Q
Gamma ray
A
- sterilizing food and medical equipment
- detect cancer
9
Q
Speed of light
A
3 x 10^8 m/s
10
Q
White light
A
combination of all frequency light produces white color light
11
Q
Monochromatic light
A
single frequency light
12
Q
Critical Angle
A
Angle of incident that produces 90º to angle of refraction
(light is refracted along the boundary)
13
Q
refractive index medium (n)
A
speed of light in a vacuum (3x10^8) / speed of light in medium
14
Q
n (air)
A
1
15
Q
Total internal reflection
A
angle of incidence = angle of reflection
All light reflect into the same median rather than refract to upper medium
