Reflection, Refraction And Colour Flashcards
when cant a reflection be seen
when light rays are scattered by rough surfaces
when can a reflection be seen
when light is reflected evenly by smooth surfaces. eg a plane mirror
when are rays reflected into the eye
when light shines onto an object viewed in a mirror
when an image is reflected ….
right becomes left and left becomes right
the angle of incidence is equal to
the angle of reflection
what is refraction
When light hits something transparent it changes speed and direction.
where does refraction take place
at the interface between two substances
what happens when light is transmitted through glass
it slows down and changes direction towards the normal.
what happens when light travels back out of glass
it speeds up again and changes direction away from the normal.
what are lenses
curved pieces of glass or transparent plastic that are designed to refract light in particular ways.
what do some lenses do
Some lenses make rays of light come together, and some lenses make the light spread out.
where are lenses used
cameras, microscopes and telescopes
what is white light
a mixture of colours
how can white light be split up and what does it give
using a prism and gives a spectrum of colours.
what colours are in the spectrum of colours
red, orange, yellow, green, blue, indigo, violet
