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Encyclopedia > Transparency (optics)
Transparent glass ball
Transparent glass ball

In optics, transparency is the property of allowing light to pass. Transparent materials can be seen through; that is, they allow clear images to pass. The opposite property is opacity. Translucent materials allow light to pass through them only diffusely, that is, the material distorts the image. Also known as diaphaneity, a commonly used term in mineralogy. Author: Chmouel Boudjnah. ... Author: Chmouel Boudjnah. ... Table of Opticks, 1728 Cyclopaedia Optics ( appearance or look in ancient Greek) is a branch of physics that describes the behavior and properties of light and the interaction of light with matter. ... This article or section does not cite any references or sources. ... A substance or object that is opaque is neither transparent nor translucent. ...


Transparency

Though transparency usually refers to visible light in common usage, it may correctly be used to refer to any type of radiation. For example, flesh is transparent to X-rays, while bone is not, making X-ray imaging useful for medicine. In the NATO phonetic alphabet, X-ray represents the letter X. An X-ray picture (radiograph) taken by Röntgen An X-ray is a form of electromagnetic radiation with a wavelength approximately in the range of 5 pm to 10 nanometers (corresponding to frequencies in the range 30 PHz... Medical imaging designates the ensemble of techniques and processes used to create images of the human body (or parts thereof) for clinical purposes (medical procedures seeking to reveal, diagnose or examine disease) or medical science (including the study of normal anatomy and function). ...



Examples of transparent materials are air and some other gases, liquids such as water, most glasses, and plastics such as Perspex and Pyrex. Where the degree of transparency varies according to the wavelength of the light, the image seen through the material is tinted. This may be due to certain metallic oxide molecules in glass, or larger colored particles, as in a thin smoke. If many such particles are present the material may become opaque, as in thick smoke. Layers of Atmosphere (NOAA) Air redirects here. ... This article or section does not cite its references or sources. ... A liquid will usually assume the shape of its container A liquid is one of the main states of matter. ... Glass can be made transparent and flat, or into other shapes and colors as shown in this sphere from the Verrerie of Brehat in Brittany. ... This article or section does not cite any references or sources. ... Perspex could mean several things. ... Pyrex is a brand name of borosilicate glass introduced by Corning Glass Works in 1915. ... The wavelength is the distance between repeating units of a wave pattern. ... Smoke from a wildfire Smoke is a suspension in air (aerosol) of small particles resulting from incomplete combustion of a fuel. ...


From electrodynamics it results that only a vacuum is really transparent in the strict meaning, any matter has a certain absorption for electromagnetic waves. Quantum electrodynamics (QED) is a relativistic quantum field theory of electromagnetism. ... Electromagnetism is the physics of the electromagnetic field: a field which exerts a force on particles that possess the property of electric charge and magnetic charge, and is in turn affected by the presence and motion of those particles. ...

A butterfly with transparent wings. The body can clearly be seen through the wings
A butterfly with transparent wings. The body can clearly be seen through the wings

There are transparent glass walls that can be made opaque by the application of an electric charge, a technology known as electrochromics. Image File history File linksMetadata Download high-resolution version (2848x2136, 3382 KB) Greta morgane (Geyer, 1833) Quelle: Eigene Aufnahme Fotograf: Achim File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Transparency (optics) Metadata This file contains additional information, probably... Image File history File linksMetadata Download high-resolution version (2848x2136, 3382 KB) Greta morgane (Geyer, 1833) Quelle: Eigene Aufnahme Fotograf: Achim File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Transparency (optics) Metadata This file contains additional information, probably... Glass can be made transparent and flat, or into other shapes and colors as shown in this sphere from the Verrerie of Brehat in Brittany. ... A substance or object that is opaque is neither transparent nor translucent. ... Electrochromism refers to materials characterised by colour change when an electrical voltage is applied. ...


Certain crystals are transparent because there are straight lines through the crystal structure. Light passes unobstructed along these lines. Quartz crystal Synthetic bismuth crystal Insulin crystals Gallium, a metal that easily forms large single crystals A huge monocrystal of potassium dihydrogen phosphate grown from solution by Saint-Gobain for the megajoule laser of CEA. In chemistry and mineralogy, a crystal is a solid in which the constituent atoms, molecules...


There is a complicated theory "predicting" (calculating) absorption and its spectral dependence of different materials. See: absorption (optics) - absorption of photons by a material and absorption spectroscopy. Absorption, in optics, is the process by which the energy of a photon is taken up by another entity, for example, by an atom whose valence electrons make a transition between two electronic energy levels. ... The word light is defined here as electromagnetic radiation of any wavelength; thus, X-rays, gamma rays, ultraviolet light, infrared radiation, microwaves, radio waves, and visible light are all forms of light. ... Absorption spectroscopy refers to a wide range of techniques where one measures how much light of a particular wavelength (color) is absorbed by a sample. ...

Quartz crystal showing transparency.
Quartz crystal showing transparency.

Image File history File links Size of this preview: 800 × 533 pixelsFull resolution (2304 × 1536 pixel, file size: 342 KB, MIME type: image/jpeg) Quartz showing transparency Origem:Brasil Description = A colorless and very clean quartz, showing transparency Source = the author is owner Date = created 2005-11-9 Author = Eurico... Image File history File links Size of this preview: 800 × 533 pixelsFull resolution (2304 × 1536 pixel, file size: 342 KB, MIME type: image/jpeg) Quartz showing transparency Origem:Brasil Description = A colorless and very clean quartz, showing transparency Source = the author is owner Date = created 2005-11-9 Author = Eurico... Quartz is one of the most common minerals in the Earths continental crust. ...

Translucency

A view through a translucent material is blurry or distorted. Examples of translucent materials are frosted glass, paper (tracing paper), and some kinds of amber. It can sometimes be difficut to identify translucent objects. For example, while it is easy to see the fur of a Polar Bear is white, it takes a truly close look to learn it is also translucent. Opacity is based either on absorption or on reflection of the light falling onto the material. A blank sheet of paper Paper is a commodity of thin material produced by the amalgamation of fibers, typically vegetable fibers composed of cellulose, which are subsequently held together by hydrogen bonding. ... Tracing Paper is a type of paper, which is translucent so the light can go through, is made by immersing unsized and unloaded paper of good quality in sulphuric acid for a few seconds. ... Amber pendants. ... Binomial name Ursus maritimus Phipps, 1774 Polar bear range Synonyms Thalarctos maritimus The polar bear (Ursus maritimus), also known as the white bear, northern bear, sea bear, ice bear or nanuq in some Inuit languages, is a species of bear that is native to the Arctic and the apex predator...


See also

Look up translucency, translucent in Wiktionary, the free dictionary.

  Results from FactBites:
 
Peak Optics , Magnifiers, Comparators, Loupes, For Inspection & Measuring, 2x to 300x (0 words)
Offering a complete range, from a simple inspection magnifier made of plastic, with or without lighting systems and high quality measuring magnifiers with focusing function and microscopes with a power of up to 300x.
Special microscopes with non-reversed image, stereoscopic magnifiers, transparency magnifiers, microfiche magnifiers, headset magnifiers and pen-type microscopes round out the assortment.
Interchangeable objective lenses for the microscopes and scales for the measuring magnifiers are available as accessories.
Optics (859 words)
Optics (appearance or look in ancient Greek) is a branch of physics that describes the behavior and properties of light and the interaction of light with matter.
The field of optics usually describes the behavior of visible, infrared and ultraviolet light; however because light is an electromagnetic wave, analogous phenomena occur in X-rays, microwaves, radio waves, and other forms of electromagnetic radiation.
The "ray" in geometric optics is an abstract object which is perpendicular to the wavefronts of the actual optical waves.
  More results at FactBites »

 
 

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