What is the prism?
in geometry, Prism refers to a certain three -dimensional shape: polyhedron or stellar polygon attached to the identical shape of the right sides. A cube or rectangular box is one of the examples of this type of prism, but instead of having a rectangle at the upper and lower part, as in this example, the geometric prism can also have a triangle, a six -point star or any other versatile shape. In optics, the prism is a transparent object with smooth flat sides that break light. Many optical prisms are also geometric prisms, often triangular prisms, but it can also be other shapes. The optical prism is commonly made of glass or clear plastic, but any material can be used if it is transparent to the light source to be refractive. An example of the refractive light can be seen by placing a pencil in a clear glass of water and observation, as it seems to be divided where the water is divided. This happens because water has a higher refraction refraction indexCe than air, so the light moves more slowly. The optical prism also has a higher refractive index than air, so the light passes through it.
The light of different frequencies or wavelengths travels at different speeds and, as a result, refracts at different angles. In the visible spectrum, part of the electromagnetic (EM) spectrum is visible to the human eye, different frequencies of light appear as different colors. Clean white light is a combination of light of many frequencies, so when clean white light shines through the prism, it disintegrates on its wavelength and creates a rainbow effect.
Red, lowest frequencies visible to human eyes, tires less than purple, the highest frequency visible to the human eye, so red bends at a less serious angle than purple. All colors in the bend in different degrees, so the prism makes a rainbow of white light. This is how rainbows also arise in nature because inThey provide when air is full of water vapor that annoys light in a similar way to a prism.
other types of prisms have different light effects. In addition to the refractive prism, the prism can be reflective or polarization . Reflective prisms reflect light, as a mirror, and are used, among other things, in a telescope. Polarizing prisms light up on various polarization or electromagnetic charge, rather than different frequencies.