Visible Light

Question 1

Why is white not on the visible light spectrum

Answer 1

white is a combination of all light

Question 2

why is black not on the visible light spectrum

Answer 2

black is an absence of light

Question 3

What is the acronym to remember the light from longest wavelength—–> shortest

Answer 3

Richard
Of
York
Gave
Battle
In
Vein

Question 4

What two things has to happen to light when hitting an opaque object

Answer 4

absorbed or reflected

Question 5

In opaque objects what colours do we see the ones absorbed or reflected.
i,e there is a banana what happens to all colours

Answer 5

blue is absorbed
green and red are reflected equally so we see yellow

Question 6

What do transparent and translucent objects do to light which opaque cannot

Answer 6

transmit light through

Question 7

how do colour filters work
i.e a red colour filter

Answer 7

only transmits red light and absorbs rest

Question 8

how are secondary colour filters different to primary

Answer 8

secondary filters the two colours that make up the colour aswell as its own

Question 9

What happens differently to light hitting smooth and rough surfaces

Answer 9

smooth surfaces = specular reflection in single direction
rough surfaces = diffusion reflection - scattered light