What are prisms?

instagram viewer

Prisms, this term is found mainly in mathematics, but also in physics, especially in optics. Prisms are easily explained.

Spectral decomposition in a glass prism
Spectral decomposition in a glass prism

Prisms are special bodies in mathematics

  • Prisms (the singular is called "prism") are special geometric bodies.
  • They have a polygon as a base and - similar to a column - parallel and equally long side edges.
  • The simplest and at the same time best-known prism is the Toblerone packaging. Here a triangle forms the base.
  • However, there are other prisms, for example Quadrilaterals or even have hexagons as a base.
  • According to the mathematical definition, every cuboid and every cube is also a prism at the same time.
  • Prism calculation - how to calculate the volume

    The volume of many geometric bodies can be relatively ...

  • And a hexagonal column with a regular hexagon as its base is also one of the prisms.
  • But: bodies that taper to a point - such as pyramids - do not count as prisms.

Prisms in Optics - Applications of Geometric Solids

  • Prisms made of glass or transparent plastics are used in many different ways in optical devices.
  • In most cases, this is again the simplest case of a prism, namely with an equilateral or right-angled triangle as the base.
  • These prisms serve as light deflectors in binoculars, astronomical telescopes and also the slide projectors that were used in the past.
  • And such glass prisms are also perfect experiment objects to show how light is broken down into its colors. If a light beam from the air reaches the inclined surface of a glass prism, it will be refracted there, i.e. deflected from its original direction. However, this deflection depends on the wavelength, i.e. the color of the light. A white light beam splits into its colors when passing through a glass prism and at the same time demonstrates what happens in a rainbow.

How helpful do you find this article?

click fraud protection