Given a block of glass that is semi-circular, a laser pointer,protractor/ruler, and index card, design your own experiment toobserve and measure total internal reflection. Describe how youwould shine the laser onto the glass block, what angles you wouldmeasure and how you would determine the critical angle from yourmeasurements.Draw the block of glass and the beam going through it at thecritical angle. Show where total internal reflection occurs. (Forthe homework assume n=1.52.) Draw this angle and all other asaccurately as you can with a protractor. Label the critical angleand give its value. Remember total internal reflection occurs onlywhen light goes from a denser medium (the sample) into one of lowerindex (air).

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