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1 medium onion, julienned. 1 and 1/2 cups walnuts, ground into paste ... 1 bay leaf. Preheat oven to 250 degrees. In a medium-walled, oven-proof braising pan, heat enough oil to coat the bottom of ...
Snell's law. Refraction of light at the interface between two media of different refractive indices, with n 2 > n 1. Since the velocity is lower in the second medium (v 2 < v 1), the angle of refraction θ 2 is less than the angle of incidence θ 1; that is, the ray in the higher-index medium is closer to the normal.
Refractive index. In optics, the refractive index (or refraction index) of an optical medium is the ratio of the apparent speed of light in the medium to the speed in air or vacuum. The refractive index determines how much the path of light is bent, or refracted, when entering a material. This is described by Snell's law of refraction, n1 sin ...
Viète. de Moivre. Euler. Fourier. v. t. e. In trigonometry, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles.
List of refractive indices. Refraction at interface. Many materials have a well-characterized refractive index, but these indices often depend strongly upon the frequency of light, causing optical dispersion. Standard refractive index measurements are taken at the "yellow doublet" sodium D line, with a wavelength (λ) of 589 nanometers.
The term "gas mark" was a subject of the joint BBC / OED production Balderdash and Piffle, in May 2005. The earliest printed evidence of use of "gas mark" (with no other terms between the two words) appears to date from 1958. [1] However, the manufacturers of the "New World" gas ranges in the mid-1930s gave away recipe books for use with their ...
The onion plant (Allium cepa), also known as the bulb onion [2] or common onion, [3] is the most widely cultivated species of the genus Allium. [4] [5] It was first officially described by Carl Linnaeus in his 1753 work Species Plantarum. [6] Synonyms during its taxonomic history are: [7] [8] Allium cepa var. aggregatum – G. Don
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