NO quartz can not used as it rotate polarization
Nicol prism
Geometry
ANALYSER can rotate
WHEN AN UN POLARISED LIGHT IS MADE TO FALL ON A NICOL PRISM.(NICOL PRISM MADE UP OF CALCITE CRYSTA)if the light is split up into two Waves is o-ray and other is e-ray when we observe that the light is polarised because .the ordinary ray is after falling it will split into two rays one ray has only arrow component .other ray having only dot component this way we can say that Nicol prism acts as polarise
Nicol Prism
prism of quartz
Amethyst is a form of quartz. Quartz belongs to the trigonal crystal system. The ideal crystal shape is a six-sided prism terminating with six-sided pyramids at each end.
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You will find quartz crystal being used in laboratory tubes and crucibles, ordinary glass, foundry molds and construction work, as a filter, crafted into a special lenses or prism and quartz glass tubes for lamps as well as in radios, televisions, radars and digital watches. Quartz is also a very important component of sandstone, quartzite and granite all of which are building stones.
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yes when you place it on the prism at its center of gravity or center of mass
Double Refraction:Erasmus Bartholinus discovered that when a beam of ordinary unpolarised light is passed through a calcite crystal, the refracted light is split up into two refracted rays.The one which always obeys the ordinary laws of refraction and having vibrationsperpendicular to the principal section is known as ordinary ray. The other, ingeneral, does not obey the laws of refraction and having vibrations in the principalsection is called as extra-ordinary ray. Both the rays are plane polarised. This phenomenon is known as double refraction. The crystals showing thisphenomenon are known as doubly refracting crystals.Construction,Working and Use of Nicol Prism:Nicol prism is a calcite crystal whose length is three times as its width.The end faces of this crystal are grounded in such a way that the angles in the principal sectionbecomes 68o and 112o instead of 71o and 109o . This is due to increase inthe field of view.The crystal is cut in two pieces by a plane perpendicular to the principal section aswell as end faces. The two cut surfaces are grounded and polished optically flat and then cemented together by a material called 'Canada balsam'.The refractive index of Canada balsam lies between the refractive indices for the ordinary and extra-ordinary rays for calcite.Working:When a beam of light enters the faces in direction parallel to the long side,it is doubly refracted into ordinary plane polarised beam and extra-ordinaryplane polarised beam. From the values of refractive indices given above, it isclear that Canada balsam acts as a rarer medium for an ordinary ray and densermedium for extra-ordinary ray. Moreover, the dimensions of the crystal are sochosen that the angle of incidence of ordinary ray at the calcite-balsam surfacebecomes greater than the corresponding critical angle 69o. Under theseconditions, the ordinary ray is completely reflected at calcite-balsam surface and isabsorbed by the tube containing the Nicol's prism. The extraordinary ray is nottotally reflected because it is traveling from a rarer to a denser medium and is thustransmitted with no appreciable loss in intensity. It is slightly displaced laterally butemerges out of the prism parallel to its original direction. Thus only the extra-ordinary ray having vibrations parallel to principal plane, is transmitted. So thelight emerging from the Nicol's prism is a plane polarized light.Use:Nicol's prism can be used both as polarizer and an analyser.When two Nicol's are arranged coaxially, then the first Nicol which produces plane polarized light is known as polariser while the second which analyses the polarized light is known as analyser.