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Ordinary light, such as that from a light bulb, is a form of wave motion consisting of electrical and magnetic fields that vibrate at right angles to the direction of travel of a light beam. Light waves vibrating in a single plane are called polarized light waves. Polarized light waves can be produced by passing light through polarizing filters. This experiment explores crossed polarizers qualitatively and quantitatively, polarization by reflection, and skylight polarization using polarizing filters. The results demonstrate that polarization reduces unwanted reflected glare from surfaces.
If and only if a lens is polarized, then regardless of the orientation of incoming light waves, light coming out of the polarized lens is always polarized in the direction of the polarization axis.
During part one, when the two filters were aligned and one was rotated, the light between them became brighter as the filter was rotated, and then the light turned into a dark blue shade.
angle between polarization axes.
When shining light through the filters and adjusting one of them to different angles, it became increasingly difficult for the light to pass through.
The resistance measurements were recorded using the DMM set to 200 ohms.
During this part of the experiment, it was noted that holding one of the filters with its axis in a vertical position reduced glare effectively.
When holding the polarizing filters in a bright region of the sky, it was observed that the region being looked at became dark as one of the polarizing filters was rotated.
The experiments conducted in this study have provided valuable insights into the behavior of polarized light and its practical applications. The following discussions summarize the key findings and their implications.
The experiments involving crossed polarizers demonstrated that when two polarizing filters are aligned, they allow light transmission, but as one filter is rotated, the intensity of transmitted light changes. This phenomenon is consistent with our hypothesis that the direction of polarization affects the behavior of light passing through polarizers.
Furthermore, the experiment on polarization by reflection illustrated how polarized sunglasses can effectively reduce glare from reflective surfaces, such as car windshields reflecting sunlight. By aligning the sunglasses' transmission axis with the reflected light's polarization, glare reduction can be achieved, enhancing visual comfort and safety while driving or in other bright environments.
Lastly, the observation of skylight polarization showed that the intensity of light from the sky changes as polarizing filters are rotated. This finding is in line with the understanding that skylight contains polarized components, and the filters interact with them to modify the perceived brightness.
Overall, the experiments confirm that polarized lenses are effective in reducing unwanted reflected glare from various surfaces, including water, roads, and snow-covered areas. The behavior of polarized light, as demonstrated in this study, has practical applications in optics and eyewear technology. The recommendations include using polarized sunglasses to enhance visibility in glare-prone conditions and verifying the authenticity of polarized sunglasses through the proposed testing method.
In conclusion, polarized lenses are effective in reducing unwanted reflected glare from various surfaces, including water, roads, and snow-covered areas. Throughout the experiment using polarizing filters, it was evident that as one of the filters was rotated, the brightness of the observed image or region increased and then gradually became darker, making it challenging to see through the filters. This effect was consistently observed when examining bright regions of the sky and when looking at the reflection on a car windshield exposed to sunlight.
Based on the findings of this experiment, it is recommended to use polarized sunglasses when facing glare from surfaces such as water, roads, and snow. Additionally, individuals interested in purchasing polarized sunglasses should verify their authenticity using the method described in the discussion section to ensure their effectiveness in reducing glare.
Exploring Polarization of Light: an Experiment Report. (2016, Apr 10). Retrieved from https://studymoose.com/document/polarized-light-lab-report
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