23 terms

Light and Colour

by E. Hung
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What type of wave is light? longitudinal or transverse?
transverse
Can light travel through a vacuum?
yes
What is the speed of light in m/s
300,000,000
The distance for light to travel in a year - about 10 thousand billion km.
light year
What will be the frequency of EMR if the wavelength is long? high or low?
low
What is the term used to refer to the bouncing off light from a shiny surface?
reflection
What do we call those mirrors which is not plain?
curved mirrors
what is the light ray that hits the mirror called?
the incident ray
what is the light ray that bounces off the mirror called?
the reflected ray
the angle of incidence = the angle of ___________ (from a plain mirror)
reflection
if the angle of incidence is 30 degrees what is the angle of reflection?
30 degrees
The type of reflection from a irregular surface.
diffused reflection
What is the image that appears behind the mirror called?
virtual image
What is term used to describe the bending of light when it passes through different media?
refraction
What is the imaginary line between the incident and reflected rays?
the normal
where does light travel fastest?
vacuum
in light, what does green and blue make?
cyan
in light, what does green and red make?
yellow
in light, what does red and blue make?
magenta
in light, what does green, red and blue make?
white
The smallest portion of Electromagnetic Spectrum.
visible spectrum
what colour is refracted the least?
red
what colour is refracted the most?
violet