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Figures (5)

F. 1
F. 1

The lens system.

F. 2
F. 2

Image of lamp filament on the galvanometer mirror.

F. 3
F. 3

Bench and mounting for the optical system.

F. 4
F. 4

An electrical laboratory set-up.

F. 5
F. 5

The arrangement lens system for lecture room galvanometer.

Equations (4)

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b · a · d s d 2
b · B · d s u 2
b · B u 2 · d s d S = b · B u 2 · u 2 υ 2 = b · B υ 2 = b · A D 2
1100 50 · 0.1 5 = 0.44