Show:
Characteristics of Light
How We See Colour
Mirrors
Refraction
Lens
100
What happens when light reflects off a smooth surface?
The normals are parallel
100
Primary colours can be...?
Additive or Subtractive
100
What does SALT stand for?
Size Attitude Location Type
100
What is refraction?
The bending of light.
100
What is a lens?
Thick pieces of glass/plastic that have at least one curved side.
200
What are sources of incandescent light?
1. electric discharge 2. sodium vapour bulb
200
What happens when you move further away from a picture?
Your eyes "mix" colours in the pixels and you can see an image.
200
Define the centre of curvature.
The centre of the sphere that the mirror fits on.
200
What happens if the angle of refraction expands?
The angle of incidence of the light right is big.
200
Why do lenses have two focal points?
This is so you can see through both sides of the lens.
300
What is the difference between luminous and non-luminous light sources?
Luminous provides it's own light source while non-luminous reflects light from the luminous light source.
300
List the colours in the order they are found on the rainbow.
Red, Orange, Yellow, Green, Blue, Indigo, Violet
300
What is a concave mirror?
A mirror that curves inward and causes reflected rays to converge at a point
300
What is the difference between reflection and refraction?
Refraction is when light bounces off an object and reflection is when light changes direction as it passes through two substances.
300
What's the difference between diverging and converging lenses?
Diverging = cave-like Converging = crescent shape
400
What's the difference between incandescent and luminescent light sources?
Incandescent gives off heat and light while luminescent just gives off light.
400
How can you get the result of black?
When the three subtractive primary colours are added together and subtracted from white light.
400
What is a convex mirror?
A mirror that curves outward and it causes reflected rays to spread out
400
What is the angle between the refracted ray and the normal?
Angle of Refraction
400
What is the difference between a lens and a mirror?
Mirrors reflect images while lenses allow you to see the image on both sides.