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The semiconductor material is refined through a process is known as zone refining. It is used for the production of high purity crystals; silicon for example has a melting temperature, so any impurity present in the crystal decreases the melting temperature. Thus zone refining process is based on the principal that the effect of impurities on the melting point of a material will control the impurity concentration of impurities material the molten and the just frozen. By maintaining the melt at specific temperature a single crystal of the material can be inserted into the molten mass on the end of the rod. After which it is possible to withdraw the single crystal having the molten material adhere to the crystal and solidify maintaining the same orientation. The phase diagram of silicon with impurity near the low-concentration region.
Q. What are the uses of an electron microscope? Uses of electron microscope: (i) It is utilized in the industry to study the surface of metals, structure of textile fib
Variation of temperature of a body according to Newton's law: Let Consider a system has a temperature Φi at time t = 0. It is placed in an environment whose temperature is Φ0. We a
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Put a nail in the lower end of a candle. The nail should be just the right weight to make the candle float with its top a little above the surface of the water. Float the candle an
Verify Gauss' theorem in electrostatics. Apply it to search the electric field strength at a point near a long straight conductor carrying electric charge.
If we have to strain a ferromagnetic crystal along certain direction, we would change the inter atomic spacing not only along this direction but also in other direction. And hence
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Determine the compression force exerted on the can for an applied force of P46 N applied at D at the angle P47 to the vertical as shown. There are two links for AB and two linkage
moment of inertia theory and easy diagrams
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