csirvi
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The size of light beam is same or different before and after refraction from a medium. If same then why we can not prove from mathematical expression. If not same why?
The size of a light beam changes after refraction through a medium, despite the angle of deviation remaining constant. This phenomenon occurs due to the varying widths of the beam as it passes through different materials, which can be mathematically expressed but often leads to confusion. The discussion emphasizes the importance of understanding the geometric relationships involved in light behavior, particularly the angles and distances related to beam width and direction of travel.
PREREQUISITESStudents of physics, optical engineers, and anyone interested in the principles of light behavior and refraction in different materials.
Doesn't look the same size to me...csirvi said:Summary:: The size of light beam is same or different before and after refraction from a medium. If same then why we can not prove from mathematical expression. If not same why?
The size of light beam is same or different before and after refraction from a medium. If same then why we can not prove from mathematical expression. If not same why?
Does it? The width of the beam is the distance along a perpendicular to the direction of travel. Look carefully at the angles that you're taking the cosine of... are these what you want?csirvi said:then the angle of deviation is same but also width of beam after refraction changes mathematically
See width represent soze of beam yes that perpendicular to the Direction of travel.Nugatory said:Does it? The width of the beam is the distance along a perpendicular to the direction of travel. Look carefully at the angles that you're taking the cosine of... are these what you want?
Posted the image.berkeman said:Can you post a picture or diagram of the situation you are asking about? Thanks.![]()
berkeman said:Can you post a picture or diagram of the situation you are asking about? Thanks.![]()