Characteristics of light
How we see colour
Mirrors
Refraction
Lenses
100
There are 2 sourses of light ? True or False
False
100
What is the outer surface of the eye called ?
Cornea
100
What is S.A.L.T ?
S-Size A-Orientation L-Location T-Type
100
How many trems are there for refraction ?
5
100
How many types of lenses are there ?
3
200
What are the four liminecences ?
Floresence Phosphoresence Chemiluminesence Bioluminesence
200
How thick is the cornea ?
It is about as thick as a credit card
200
What is a convex mirror ?
A mirror that bulges in the centre
200
What is refraction light used for ?
Used in communications and other tecnologies
200
Whats a focal point ?
When parallel rays pass through a converging lens, and then meet
300
Whats the diffrence in luminous and non-louminous ?
lominous prouces its own light and non-lominous reflacts light from another source
300
What is the retina ?
The inner lining at the back of the eye that acts as a projection screen for the light rays entering your eye
300
What is the principal axis on a concave mirror ?
A line drawn from the ventre of the circle through the centre of the mirror
300
What is refraction ?
The change in the direction of light when it crosses a boundary two media
300
What is a lens ?
Thin piece of glass or plasitc that has at lest one side curved
400
What is the light bulb giving off ?
It is giving off 90% electrical energy is givin off as gass and 10% is transformed into light
400
Why is the pupil black ?
Because light enters but does not leave
400
What is the vertex (V) for concave mirrors ?
The point where the princaipal axis meets the mirror
400
What causes refraction ?
Whe light passes from one medium to another, it changes direction
400
Whats the diffrence between a convering lens and a diverging lens ?
Conveing makes light go together and diverging make light go apart
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