Phy i unit iv ppt polarization
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This document is a presentation on engineering physics unit IV polarization by Dr. A.K. Mishra from Jahangirabad Institute of Technology, Barabanki. It discusses the concept of polarization being associated with transverse waves, and how light can be linearly, circularly, or elliptically polarized. Polaroid films can test if light is polarized, and polarization can occur through scattering or reflection. Some substances can rotate the plane of polarization. Malus' law determines intensity of transmitted light based on orientation of polarizing films. Polarization is used to reduce glare in sunglasses and displays. Thickness of transparent tape relates to color of transmitted light.
Phy i unit iv ppt polarization
- 1. Engineering Physics I Unit IV Presentation By Dr.A.K.Mishra Professor Jahangirabad Institute of Technology, Barabanki Email: akmishra.phy@gmail.com Arun.Kumar@jit.edu.in 6/13/2017 Dr A K Mishra, Academic Coordinator, JIT Jahangirabad 1
- 2. Engineering Physics I Polarization • At the end of this module successful students will be able to: • The concept of polarization is associated with transverse waves only. • Light can be linearly, circularly or ellipticall • y polarized. • A Polaroid film can be used as an analyzer to test if the light is polarized. • Light can be polarized by scattering or by reflection. • Some substances are optically active and can rotate the plane of polarization.: • Analyze using a polarizing film if the incoming light is fully , partially or not polarized. • Determine using Malus • law the intensity of the transmitted light as a function of the orientation of the two • polarizing films. • Explain how the polarization is used in reducing glare by sunglasses and other visual display screens. • Determine how the thickness of the transparent • tape is related to the color of the light transmitted. 6/13/2017 Dr A K Mishra, Academic Coordinator, JIT Jahangirabad 2
- 3. Definition of polarization • The action of polarizing or state of being or becoming polarized: such as a • (1) : the action or process of affecting radiation and especially light so that the vibrations of the wave assume a definite form (2) : the state of radiation affected by this process • b : an increase in the resistance of an electrolytic cell often caused by the deposition of gas on one or both electrodes 6/13/2017 Dr A K Mishra, Academic Coordinator, JIT Jahangirabad 3