total internal reflection
* * *Complete reflection of a ray of light in a medium such as water or glass, from the surrounding surfaces back into the medium.It occurs when the angle of incidence is greater than a certain limiting angle, called the critical angle. In general, it takes place at the boundary between two transparent media when a ray of light in a medium of higher index of refraction approaches another medium of lower index of refraction at more than the critical angle. At all angles less than the critical angle, both reflection and refraction occur. Total internal reflection is responsible for rainbows, atmospheric halos, the sparkle of a diamond, and the path of light through optical fibres.
* * *▪ physicsin physics, complete reflection of a ray of light within a medium such as water or glass from the surrounding surfaces back into the medium. The phenomenon occurs if the angle of incidence is greater than a certain limiting angle, called the critical angle. In general, total internal reflection takes place at the boundary between two transparent media when a ray of light in a medium of higher index of refraction approaches the other medium at an angle of incidence greater than the critical angle. For a water-air surface the critical angle is 48.5°. Because indices of refraction depend on wavelength, the critical angle (and hence the angle of total internal reflection) will vary slightly with wavelength and, therefore, with colour. At all angles less than the critical angle, both refraction and reflection occur in varying proportions.Such atmospheric phenomena as halos and rainbows are caused by internal reflections in ice crystals and water droplets. Glass prisms (prism) can be shaped to produce total internal reflection and as such are employed in binoculars, periscopes, telescopes, and other optical instruments. Light rays may be conducted over long, twisting paths by multiple total internal reflection in glass or plastic rods or fibres. See also fibre optics.
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Total internal reflection — The larger the angle to the normal, the smaller is the fraction of light transmitted, until the angle when total internal reflection (blue line) occurs. (The color of the rays is to help distinguish the rays, and is not meant to indicate any… … Wikipedia
total internal reflection — Optics. See total reflection. * * * total internal reflection noun (physics) The complete reflection of a light ray at the boundary of a medium with a lower refractive index • • • Main Entry: ↑total … Useful english dictionary
total internal reflection — visiškasis vidaus atspindys statusas T sritis fizika atitikmenys: angl. total internal reflection vok. innere Totalreflexion, f rus. полное внутреннее отражение, n pranc. réflexion intégrée interne, f; réflexion totale interne, f … Fizikos terminų žodynas
total internal reflection — noun the total reflection of a light ray which occurs when light from one medium strikes the surface of a medium of lower refractive index or optical density in excess of the critical angle … Australian English dictionary
Total Internal Reflection — The trapping of light by refraction and reflection at critical angles inside a semiconductor device so that it cannot escape the device and must be eventually absorbed by the semiconductor … Energy terms
total internal reflection — The trapping of light by refraction and reflection at critical angles inside a semiconductor device so that it cannot escape the device and must eventually be absorbed by the semiconductor. Solar Electric Glossary … Energy terms
total internal reflection — noun Physics the complete reflection of light (without refraction), occurring at an interface with a less dense medium when the angle of incidence exceeds the critical angle … English new terms dictionary
Total internal reflection fluorescence microscope — (TIRFM) diagram 1. Specimen 2. Evanescent wave range 3. Cover slip 4. Immersion oil 5. Objective 6. Emission beam (signal) 7. Excitation beam ] 1. Objective 2. Emission beam (signal) 3. Immersion oil 4. Cover slip 5. Specimen 6. Evanescent wave… … Wikipedia
Total external reflection — is an optical phenomenon where electromagnetic radiation (e.g. visible light) can, at certain angles, be totally reflected from an interface between two media of different indices of refraction (see Snell s law). Total internal reflection occurs… … Wikipedia
Reflection (physics) — Reflection is the change in direction of a wave front at an between two different media so that the wave front returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. Law of… … Wikipedia