Optics Flashcards
Incandescence light is…
The production of light due to high temperature
•candles
•incandescence light bulb
What is electric discharge?
The process of producing light by passing an electric current through gas
•lightning
•neon sign
Phosphorescence
The process of producing light by the absorption of ultra violet light resulting in the emission of visible light over a period of time
•glow in the dark toys
Fluorescence light is…
The immediate Emission of visual light as a result of absorption of ultraviolet light
•highlighters
•detergent
Chemiluminescence light is…
The direct production of light as a result of a chemical reaction with little to no heat produced
•glow sticks
Bioluminescent light is…
The production. Of light in a living organism as a result of a chemical reaction with little to no heat
•firefly
•glow worm
Triboluminescent light is…
The production of light from friction as a result of scratching or rubbing certain crystals
What is light
A form of energy that travels in straight lines when in one medium
What is the speed of light?
3x10 to the power of 8 m/s
Light can be…
Reflected, transmitted, or absorbed
Materials can be…
Transparent-transmits all light rays
Translucent- permits some light to pass through
Opaque- not allowing any light to pass through
Light is made of …
Electromagnetic waves
what are the properties of electromagnetic waves?
Electrical and magnetic properties
What is the only light that the human eye can detect?
Visible light
Specular reflection is…
Parallel light rays striking a smooth surface and reflect parallel rays
•mirrors
•waxed cars
Diffuse reflection is…
Parallel light rays reflecting of a full or irregular surface and reflect in different directions
•paper
•cloth
What is the law of reflection?
The angle of incidence = angle of reflection
What is a real image?
An image formed by light rays converging at one point
What is a virtual image?
A image formed by light that doesn’t actually converge but diverges
What does SALT mean?
Size
Attitude
Location
Type of image
What is a plane mirror
A mirror with a flat surface
What is the salt characteristics for a plane mirror?
S- same size
A- upright but laterally inverted (backwards)
L-same distance behind mirror
T- real
What is a concave mirror
What is another name you can call it?
A mirror with a curved bike inwards (conCAVEd in)
Also knows as a converging mirror
What are the rules for a concave mirror and a convex mirror?
1: light eat shone parallel to P.A. Will reflect through F
2: A light Ray shine through C will reflect back through C
3: a light Ray shone through F will reflect parallel to P.A.
Applications for a concave mirror are…
Car headlight
Satellite dish
