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how is retaining wall worksa retaining wall together with the backfill the wall retains and the soil that supports the wall is a highly indeterminate
interfacial defects grain boundaries are interfaces where crystals of dissimilar orientations meet a grain boundary is a single-phase interface
dislocations-linear defects dislocations are abrupt alters in the regular ordering of atoms along a line
state the term- solubilitysolid solutions are made of a host the solvent or matrix which dissolves the solute minor component the ability to dissolve
impurities of solidsimpurities are frequently added to materials to improve the properties for example carbon added in small amounts to iron makes
explain about the interstitial defectsan interstitial is an atom that occupies a place outside the normal lattice position it might be the similar
what is frenkel defecta pair of one cation and one anion can be missing from an ionic crystal as shown in the following figure such a pair of vacant
what are the lattice vacanciesthe lattice vacancies are a stable feature of metals at all temperatures above absolute zero by successive jumps of
vacancies a vacancy is a lattice position that is vacant due to the atom is missing it is formed when the solid is formed vacancies are simply
what is an accommodationaccommodation is the ability of the eye to focus on an object situated at variable distances from the eye like a camera even
explain about phosphprous and its allotrpes white phosphorus - crystalline solid p4 red phosphorus - polymeric solid scarlet phosphorus violet
what are important terms in accommodation and convergenceaccommodation and convergencein this section some important terms are includeda how a person
carbon and its allotropes diamond - an extremely hard transparent crystal with the carbon atoms arranged in a tetrahedral lattice a poor electrical
explain in detail about the allotropy allotropy refers only to dissimilar forms of an element within the similar phase or state of matter ie
give example of allotropythe element carbon has two common allotropes diamond where the carbon atoms are bonded together in a tetrahedral lattice
what is allotropy if the change in structure is reversible then the polymorphism is called as allotropyallotropy gr allos other and tropos manner
determine the coordination number cn of hcp in hcp unit cell the base centered atom touches six corner atoms in the similar plane three atoms in a
calculation of number of atoms per unit cell of hcp n one half of the each of the 2 base centre atoms 2x12 one six of the every of the 12 corner
what is the coordination number of fcc cn if we take the corner atom the face centered atoms are the nearest neighbors a corner atom has four
when designing amp constructing inductance standards what considerations must be taken into accountans construction of inductorsconstructional
current flowing in a certain pn junction at room temperature is 2 x 10-7a when a large reverse bias voltage is applied calculate current when a
explain about the physiological accommodation physiological accommodation contractile power of the ciliary muscle required to change the focussing
what is physical accommodationphysical accommodation is the actual physical deformation in the lens power it is measured in diopters eg if the
what are the common changes in the eye other changes in the eye are1 increase in curvature of anterior surface of lens 2 anterior pole of lens moves
jackson coleman and fischer theoryjackson coleman theory during accommodation the ciliary muscle contraction causes an anterior thrust of the