3B Scientific SEK Optics - Manual (Page 61)

Exercise
Examine how the image is generated in the eye!
What do we need?
1 Optical lamp
with power supply unit
1 Base plate
1 Screen
2 Focusing lenses “+50”
1 Aperture holder
1 F 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. Place the screen on the right side of the base plate!
4. Place the “+50” lens in front of the optical lamp and the aperture holder with the F aperture in front
of the lens!
5. Place the second “+50” lens between the aperture holder with F aperture and the screen! (In com-
bination with the screen this lens forms an eye.)
6. Focus the F!
7. Describe the features of the image!
8. Explain how the image is produced!
9. Give at least three rules that should be observed when reading!
ELWE Physical experiments for education in natural science and engineering
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1 SEG - OP 5.1 Generation of Images in the Eye