Experimental part
1. Switch on a LASER and receive the interference pattern.
2. Draw this picture in your own notebook and measure the distance between max in different places. For example:
y = S / ( N – 1 ). (9.3)
3. Fill the table 9.1
Figure 9.1
Table 9.1
№
| Si , mm
| yi , mm
| , mm
| L , mm
| d , mm
| Λ, nm
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| 0,22
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4. Measure the distance L between the plate with slits and screen.
5. Calculate the length of a laser light wave by this formula:
, (9.4)
where d - is the distance between two parallel slits, d = 0.22 mm.
6. Calculate the errors for these measurements.
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