light?

July 24, 2010 by homelighting · 6 Comments
Filed under: Physics 
light
Rec asked:


when light enters a prism, does the sphape of the prism effect the direction light changes????

for example: light enters a glass that has a rectangular prism shape or light enters a glass that has a cone shape.
i also have that same thought because i was about thinking about the shape of a diamond. Too deep or too shallow will cause light to be not refracted as much.

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Comments

6 Responses to “light?”
  1. Leo says:

    i think the different shapes just affect how the light is bended and split into different colors, its just my guess though. [who] Leo

  2. Michael says:

    yeah [who] Michael

  3. ra says:

    Yes, the shape of the prism partially determines the angles that light goes through. [who] ra

  4. Steve W says:

    Yes, there are basically two factors that affect the way light is bent through a prism.
    These are:
    1. The refractive index of air (assuming your prism is sitting in air), and the refractive index of the prism material (glass, plastic, etc.)
    2. The angle at which the light enters the prism (the angle of incidence).

    The equation governing this is called Snell’s Law, and it uses trigonometry (some of the other buttons on the calculator) to allow either an angle or an index of refraction to be calculated, if the other 3 pieces of information are known.

    If the light is incident on a flat surface, like a prism, it will bend uniformly.
    If the light is incident on a curved surface, like a cylinder, the bend angles will differ across the light beam, depending on the angles that the individual light photons strike the glass.

    Basically, this is how a lens works. The glass surface is curved just right to get most of the light rays to come together (focus) at some point on the other side. [who] Steve W

  5. dizzy says:

    The shape does affect the general direction of the refracted light.

    However, light’s different components (colors) have different indices of refraction so whatever prism you have, there is always a constant angle that light will bend towards to. [who] dizzy

  6. BUDDY says:

    the shape of the prism does effect the direction of the light. in every bend or turn the light will flow thru to those direction. [who] BUDDY

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