Because stray light barely affects this measurement, the
clasroom only needs to be slightly darkened in order to make the
interferences on the screen visible. The distances must be measured
very precisely because even a small imprecision will lead to large
deviations in the result.
The wavelength of light can be determine in a great number of
ways. In this experiment you will be introduced to the so-called
objective method with transmission grating. The name "transmission
grating" means that the light passes through the grating and
experiences interference while doing so.
Determine the wavelength of maximum intensity with a transmission
grating.
| Materiallist (Excerpt) |
Product |
Amount |
|
Power supply 0...12 V DC/ 6 V, 12 V AC, 230 V
|
13505-93
|
1
|
|
Support base variable
|
02001-00
|
1
|
|
Screen, semitransparent, 150x150mm²
|
09851-03
|
1
|
|
LED - red, with series resistor and 4 mm plugs
|
09852-20
|
1
|
|
Lens on slide mount, f=+100mm
|
09820-02
|
1
|
|
Lens on slide mount, f=+300mm
|
09820-04
|
1
|
|
Stray light tube for LED, Di = 8 mm, l = 40 mm
|
09852-01
|
1
|
|
Support rod, stainless steel, l = 600 mm, d = 10 mm
|
02037-00
|
2
|
|
Slide mount without angle scale
|
09851-02
|
1
|
|
Grating, 500 lines/mm, in slide frame, glassless
|
09851-16
|
1
|
|
Diaphragm holder, attachable
|
11604-09
|
2
|
|
Measuring tape, l = 2 m
|
09936-00
|
1
|
|
Connecting cord, 32 A, 750 mm, red
|
07362-01
|
1
|
|
Connecting cord, 32 A, 750 mm, blue
|
07362-04
|
1
|
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