How to observe total internal reflection of light with a semicircular glass block - Physics Rox
In this video, Ms Hoo shows how to observe total internal reflection with a semicircular glass block and a ray box.
This is a lab practical which students taking SPM and IGCSE Physics must know how to conduct.
0:00 Introduction
0:14 Why we use a semicircular glass block to study total internal reflection
10:42 Apparatus & materials needed
11:25 Observing total internal reflection
12:41 How to obtain and measure the critical angle
Note to self: 7:58 link to TIR
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Teacher Zyen a.k.a. Ms Hoo has been teaching Physics since 2005. She holds a Masters in Education, TEFL qualification, Bachelors of Civil Engineering (Honours) and as of this video's date, is currently completing her Doctor of Education.
Пікірлер: 3
7:58 where is the video about total internal reflection
If the ray came from the middle of the upper semicircle, will the ray remain the same and the path will not deviate?
@PhysicsRoxz
3 ай бұрын
Yes. In that case, at both boundaries (air to glass, glass to air), the incident angle is zero and refracted angle is zero. So the path of the light ray would be in a straight line with no deviation.