Brief note on the classification of Alloys
Write down a brief note on the classification of Alloys?
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Alloys can be categorized by the number of their components. The alloy with two components is termed as binary alloy; one with three is termed as ternary alloy and so on. Alloys can be further categorized as either substitution or interstitial alloys, depending on their process of formation. In substitution alloys, the atoms of components are around of similar size and the different atoms are simply replaced for one another in the crystal structure. An illustration of a binary substitution alloy is brass, which is made up of copper and zinc. Interstitial alloys take place whenever the atoms of one component are substantially smaller than the other and the smaller atoms fit to the spaces (or interstices) among the bigger atoms.
Planck equation: The quantum mechanical equation associating to the energy of a photon E to its frequency nu: E = h nu.
Sievert: Sv: The derived SI unit of dose equivalent, stated as the absorbed dose of the ionizing radiation multiplied by internationally-agreed-upon dimensionless weights, as various kinds of ionizing radiation cause various kinds of damage in the liv
Radian: rad: The supplementary SI unit of the angular measure stated as the central angle of a circle whose subtended arc is equivalent to the radius of the circle.
Pascal: Pa The derived SI unit of pressure stated as 1 N acting over a region of 1 m2; it therefore has units of N/m2
Planck radiation law: The law which explained blackbody radiation better than its precursor, therefore resolving the ultraviolet catastrophe. This is based on the supposition that electromagnetic radiation is quantized. Q : Explain Drake equation Drake equation Drake equation (F. Drake; 1961): The method of estimating the number of intelligent, scientific species (that is, able to communicate with other species) in subsistence in our space. N
Drake equation (F. Drake; 1961): The method of estimating the number of intelligent, scientific species (that is, able to communicate with other species) in subsistence in our space. N
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Avogadro's hypothesis (Count A. Avogadro; 1811): Equivalent volumes of all gases at similar temperature and pressure contain equivalent numbers of molecules. This is, in fact, true only for the ideal gases. <
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What do you mean by the term positron? Explain in short.
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