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The light from the light source when travelling through a medium thickness, different certainly caused by refraction in a straight line when walking through an intermediary with the same density as the medium of the same type. The lens and Prism as the device that is causing the deviation of a beam that shines through. It differs in that the prism can separate out the transmitted beam is light in different colors according to the elements of light, or the so-called spectral (spectrum) (12.5 images)

The light emitted from the light source. When traveling through a medium with a different density. Will refract It will pass in a straight line when walking through a medium density equal or the same type as intermediaries.
Lenses and prisms are devices that cause deviations of the beam shines through. Unlike the beam shines through a prism to separate the light into its component colors of light, or so-called spectrum (spectrum) (Figure 12.5).

Light emitted from the light source. When traveling through a medium with a different density to refraction. But going through a straight line when passing through medium density rate or as a medium of the same.The lens and prism is a device that causes the deviation of light to shine through. Unlike the prism can be separated into light beam shines through as components of light นั้นๆหรือ called spectrum (spectrum). (picture 12.5).