VISIBLE LIGHT

What do each colour in the visible light spectrum have

its own narrow band of wavelength and frequency

What is specular reflection

reflection from a smooth surface in a single direction

What is diffuse reflection

reflection from a rough surface causing scattering

What is dispersion

white light splits into its different colours

Which waves are harder to change direction

waves with a longer wavelength

What determines the colour of an opaque object

which wavelength of light are more strongly reflected

What happens to wavelengths that are not reflected

wavelengths that aren't reflected are absorbed

Why are objects white

all wavelengths are reflected equally

Why are objects black

all waelengths are absorbed

How are rainbows created

light refracts through water

the raindrops act like a prism

splits the sunlight into its 7 components

Which colour refracts the most

Violet, shortest wavelength

Which colour refracts the least

Red, longest wavelength

What objects transmit light

transparent or translucent objects

What occurs in refraction

the speed and wavelength decrease in denser material

Why does dispersion in a pyramid occur

Different wavelengths refract at different amounts

They spread out and create a rainbow effect

What are the three light primary colours

Red, Green, Blue

What does red light + green light make

yellow light

What does red light + blue light make

magenta light

What does blue light + green light make

cyan light

How do colour filters work

absorbing certain wavelengths and transmitting other wavelength

What colours do colour filters transmit

only the colour they are