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.