3B Scientific SEK Optics - Manual (Page 37)

Exercise
Examine the way the light reacts when it passes through a prism at a vertical angle!
What do we need?
1 Optical lamp
with power supply unit
1 Base plate
1 Screen
1 Prism
1 Single-slot aperture
1 Mask
Conducting the experiment
1. Attach the mask to the screen!
2. Place the optical lamp on the left side of the base plate, so that the light emerges parallel to the
right!
3. Place the screen in front of the optical lamp!
4. Place the prism in the middle as marked on the mask!
5. Insert the single-slot aperture into the optical lamp!
6. Change the position of the optical lamp, so that the light hits the hypotenuse surface on the prism
at a vertical angle and with a distance of approx. 1 cm from the optical axis!
7. Observe the beam of light and draw it on the mask!
8. Repeat the experiment after placing the prism with its cathetus surface pointing towards the optical
lamp! The light must hit the prism at a vertical angle!
9. Observe the beam of light and draw it (sketch)!
10. Name two possible applications for a prism!
ELWE Physical experiments for education in natural science and engineering
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1 SEG - OP 3.7 Total Reflection on a Prism