Physics 11.2.1a Refraction
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You are one of those rare people who can explain things exceptionally well. I'm trying to wrap my brain around gravitational lensing, and your wavefront explanation got me at least part of the way there: It doesn't matter whether light is slowed down by glass, water, or the fact that time around mass runs slower. In other words, light gets slowed down by time itself when it gets close to mass (like a star), and the light gets bent. Thanks!
2 years ago 8
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You can also use the analogy of the car to describe refraction in the light ray. When the car approaches sand at an angle, 1 wheel will slow down first, causing the car to swerve.
2 years ago 7
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@derekowens thanku :) u are a great teacher ! btw happy new year , sir ! :) :)
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Thank you so much. Light is the last chapter in this year's syllabus and my teacher had rushed when teaching this to get us ready for the exams so i didn't really understand the topic. Thanks again :)
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@derekowens Thank You !!
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Brilliant, Credit were credits due
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@derekowens does this mean that the wavelength becomes shorter but the frequency remains same ??
rachana481 1 month ago in playlist Physics - Reflection and Refraction
@rachana481 Yes, I believe that's correct. The speed slows, but the color (which is related to the frequency) remains the same, so that means the wavelength would have to change. Good thinking.
derekowens 4 weeks ago
OKay i have a question when this happens does the wave stay constant speed after it slows down from the refraction if it slows down does that mean we can stop light?
SwoodyPlaysWow 1 month ago
@SwoodyPlaysWow The light will slow down when it enters the material (glass, water, etc) and then it speeds back up when it comes out.
derekowens 1 month ago
I have a question... during refraction, in the glass, do the gaps between those waves get smaller than the ones in the air..?? pls help me :)
HnJ0550 1 month ago
@HnJ0550 I think so. I think the light slows down, and the waves get closer together, while the frequency remains the same.
derekowens 1 month ago