Colour and Image etc. Flashcards
absorb
taken into a material
dispersion
the splitting up of a ray of light of mixed wavelengths by refraction into its components.
focal point
the point at which the rays refracted by a convex lens cross over.
normal
an imaginary line at right angles to a surface where a light ray strikes it.
photoreceptors
specialised cells that are sensitive to light.
plane
a mirror with a flat reflective surface
primary colour
the colors red, green, and blue
prism
a triangular-shaped piece of glass used to produce a spectrum of light
secondary colour
colors that can be obtained by mixing two primary colors
spectrum
a band of colours produced when light is spread out by a prism
real image
an image that you can put on screen ; the image formed in your eyes.
virtual image
an image that cannot be focused onto a screen.
