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index of refraction

absolute index of refraction PHYS

refraction index of OPT

relative index of refraction PHYS

Einsprachige Beispiele (nicht von der PONS Redaktion geprüft)

Englisch
The core is surrounded by a medium with a lower index of refraction, typically a cladding of a different glass, or plastic.
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In wavelength ranges where a medium has significant absorption, the index of refraction can increase with wavelength.
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These can be thought of as moving periodic planes of expansion and compression that change the index of refraction.
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In gemology a different type of refractometer is used to measure index of refraction and birefringence of gemstones.
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To achieve a negative index of refraction, however, permittivity with negative values must occur within the same frequency range.
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In the more general case, the distance to the foci is the focal length multiplied by the index of refraction of the medium.
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It is known that the silicate particles have a real index of refraction ranging between 1.5 and 1.6 for visible light.
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The critical angle depends on the index of refraction of the materials, which may vary depending on the wavelength of the light.
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The oil may have an index of refraction near 1.5 and the water has an index of 1.33.
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The critical angle depends on the relative difference in index of refraction, larger differences will increase the critical angle and trap more light.
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