Refractive Index of a Liquid Using Spectrometer

deflective Index of a liquid using spectrometer Refractive Index The refractile proponent (or indicator of refraction) of a strong point is a measure of how much the speed of white (or some other waves much(prenominal) as sound waves) is reduced inside the medium. For example, common soda-lime crosspatch has a deflective index of 1.5, which means that in glass, infirm travels at 1 / 1.5 = 0.67 times the speed of fall in a vacuum. Two common properties of glass and other diaphanous materials are directly related to their refractive index. First, light rays assortment direction when they cross the interface from air to the material, an government issue that is employ in lenses. Second, light reflects partially from surfaces that have a refractive index different from that of their surroundings.

[pic] The refractive index, n, of a medium is defined as the ratio of the velocity, c, of a wave phenomenon much(prenominal) as light or sound in a advert medium to the phase velocity, vp, in the medium itself: [pic] machine Spectrometer Mercury arc take aim & holloa prism filled with an unknown liquid (here it is glycerin) Experiment The prism spectrometer can used to measure the refractive index at a assumption wavelength using the formula [pic] where A is the prism angle and Dmin is angle of minimum deviation for that wavelength. The spectrometer is a precision instrument and is easily capable of amount the refractive to an accuracy of four significant figures. The dispersive exponent of a material is usually character! ised by its number which is defined as [pic] where nd is the refractive index for the Helium d-line (587.56nm), nF the refractive index for the Fraunhofer (Hydrogen) F-line (486.13nm) and nC the refractive index for the Fraunhofer (Hydrogen) C-line (656.27nm). The resolving power of a prism is given by the expression [pic] where d is the diference in path length betwixt the extreme light paths through with(predicate) the prism. Using your experimental...If you want to jump a full essay, social club it on our website: OrderCustomPaper.com

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