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Transparency and translucency. Dichroic filters are created using optically transparent materials. In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without appreciable scattering of light. On a macroscopic scale (one in which the dimensions are ...
Opacity is the measure of impenetrability to electromagnetic or other kinds of radiation, especially visible light. In radiative transfer, it describes the absorption and scattering of radiation in a medium, such as a plasma, dielectric, shielding material, glass, etc. An opaque object is neither transparent (allowing all light to pass through ...
A gobo is an object placed inside or in front of a light source to control the shape of the emitted light and its shadow. [1][2][3][4][5] For studio photography purposes, the term "gobo" has come to refer to any device that casts a shadow, and various pieces of equipment that go in front of a light (such as a gobo arm or gobo head). [6] In ...
One-way mirror. A one-way mirror, also called two-way mirror[1] (or one-way glass, half-silvered mirror, and semi-transparent mirror), is a reciprocal mirror that appears reflective from one side and transparent from the other. The perception of one-way transmission is achieved when one side of the mirror is brightly lit and the other side is dark.
Due to Rayleigh scattering, a transparent material appears yellowish-red in transmitted white light and blue in the scattered light perpendicular to the transmitted light. [7] The phenomenon illustrated in the bottom photo is an example of the Tyndall effect .
Light and Space. Light and Space denotes a loosely affiliated art movement related to op art, minimalism and geometric abstraction originating in Southern California in the 1960s and influenced by John McLaughlin. [1] It is characterized by a focus on perceptual phenomena, such as light, volume and scale, and the use of materials such as glass ...
Smart glass in an opaque state. Smart glass, also known as switchable glass, dynamic glass, and smart-tinting glass, is a type of glass that can change its optical properties, becoming opaque or tinted, in response to electrical or thermal signals. This can be used to prevent sunlight and heat from entering a building during hot days, improving ...
An object's transparency is measured by its total transmittance. [2] Total transmittance is the ratio of transmitted light to the incident light. There are two influencing factors; reflection and absorption. For example: Incident light = 100% - (Absorption = -1% + Reflection = -5%) = Total Transmittance = 94%