3B Scientific SEK Optics - Manual (Page 5)

Exercise
Examine how light diffuses!
What do we need?
1 Optical lamp
with power supply unit
1 Base plate
1 Three-slot aperture
1 Mask
Conducting the experiment
1. Attach the mask to the base plate!
2. Place the optical lamp on the left side of the base plate, so that the light emerges conically to the
right!
3. Sketch the edges of the beam of light on the mask!
4. Hatch the illuminated area with a coloured pen!
5. Insert the three-slot aperture into the aperture holder!
6. Draw the three narrow beams of light as lines!
ELWE Physical experiments for education in natural science and engineering
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1 SEG - OP 1.1 Diffusion of Light, Pencil of Rays and Light Beam