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Polarizing filters - The purpose of the first polarizers is...

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Polarizing filters Light waves are oscillating in all directions. http://ocw.mit.edu/resources/res-6-001-electromagnetic-fields-and-energy-spring-2008/chapter-6/06.pdf GUIDE QUESTIONS 1. How does varying the locations of the light sources with respect to the photometer affect the result of the experiment?  Varying the locations of the light sources with respect to the photometer, as the transmittance decreases the distance of the  second photometer also decreases. 2. What is the purpose of using the neutral density filters in the experiment?  The purpose of the neutral density filters is to vary the intensity of the second light source which gives the idea of the  relationships of intensity and distance of the light sources from the photometer. r kala mo ah haha 3. What about the polarizers? What are they for? Do you really need to use two polarizers?
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Unformatted text preview: The purpose of the first polarizers is to polarize the unpolarized light and the polarized light would be the incident that pass through the second polarizer to vary the direction or the angle, the overall transmittance depends on the angle between the polarizers. It is need because it regulates the light transmittance to make it darker or brighter without changing its position. 4. Enumerate and discuss possible sources of error in the equipment? The possible errors that we encounter in this experiment are: the polarizers are not accurate because it is calibrated by difference of 10o. The light sources may change its intensity especially its luminance intensity or the radiant energy which is the constant of the two light sources....
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