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X-ray optics is the branch of optics that manipulates X-rays instead of visible light.It deals with focusing and other ways of manipulating the X-ray beams for research techniques such as X-ray diffraction, X-ray crystallography, X-ray fluorescence, small-angle X-ray scattering, X-ray microscopy, X-ray phase-contrast imaging, and X-ray astronomy.
Stevie Ray Vaughan. / 32.673617°N 96.812850°W / 32.673617; -96.812850. Stephen Ray Vaughan (also known as SRV; October 3, 1954 – August 27, 1990) was an American musician, best known as the guitarist and frontman of the blues rock trio Stevie Ray Vaughan and Double Trouble. Although his mainstream career spanned only seven years, he ...
The numerical aperture with respect to a point P depends on the half-angle, θ1, of the maximum cone of light that can enter or exit the lens and the ambient index of refraction. As a pencil of light goes through a flat plane of glass, its half-angle changes to θ2. Due to Snell's law, the numerical aperture remains the same: NA = n1 sin θ1 ...
TL-122-D. Extended base containing lens filters in blue/red/clear plus spare bulb. Issued late in 1944. Manufacturer's name (Niagara, Ray-O-Vac, USALite, G.E.C.) stamped on base of housing. The TL-122-D used a copper battery spring. Approved as to design in 1960, the MX-99/U was assigned the NSN stock number NSN 6230-00-264-8261 in January 1961 ...
White light is dispersed by a prism into the colors of the visible spectrum. The visible spectrum is the band of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light (or simply light). The optical spectrum is sometimes considered to be the same as the ...
Geometrical optics. Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays. The ray in geometrical optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances. The simplifying assumptions of geometrical optics include that light rays:
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