shown in fig
71Optical axis grating — Optical axis gratings (OAGs) are gratings of optical axis of a birefringent material. In OAGs, the birefringence of the material is constant, while the direction of optical axis is periodically modulated in a fixed direction. In this way they are …
72Nanjing — This article is about the city in Jiangsu province. For other uses, see Nanjing (disambiguation). Nanjing 南京   Sub provincial city   南京市 …
73Liang Dynasty — Not to be confused with the 9th century Later Liang Dynasty. Liang 梁 ← …
74Powder metallurgy — is the process of blending fine powdered materials, pressing them into a desired shape (compacting), and then heating the compressed material in a controlled atmosphere to bond the material (sintering). The powder metallurgy process generally… …
75Alpher-Bethe-Gamow paper — In physical cosmology, the Alpher Bethe Gamow paper, or αβγ paper, was created by Ralph Alpher, then a physics PhD student, and his advisor George Gamow. The work, which would become the subject of Alpher s PhD dissertation, argued that the Big… …
76Automatic milking — is the milking of dairy animals without human labour.The milking processThe milking process is the collection of tasks specifically devoted to extracting milk from an animal (rather than the broader field of dairy animal husbandry). This process… …
77Electron beam physical vapor deposition — or EBPVD is a form of physical vapor deposition in which a target anode is bombarded with an electron beam given off by a charged tungsten filament under high vacuum. The electron beam causes atoms from the target to transform into the gaseous… …
78Pi Josephson junction — A pi Josephson Junction is a specific instance of a Josephson Junction where the Josephson phase phi is equal to pi in the ground state, i.e. when no external currents or magnetic fields are applied to the Josephson junction. Background The… …
79Beta wavelet — Continuous wavelets of compact support can be built [1] , which are related to the beta distribution. The process is derived from probability distributions using blur derivative. These new wavelets have just one cycle, so they are termed unicycle …
80THD analyzer — Total Harmonic Distortion (THD) Analyzers calculate the total distortion introduced by all the harmonics of the fundamental frequency wave. In most cases THD is the amount that is required to calculate, rather than distortion caused by individual …
