AL PHY~Diffraction grating experiment:
In the experiment of diffraction grating,
the first order spectrum is used for measuring the wavelengths of different colours.
Give one advantage and one disadvantage of using the second order spectrum instead.
AL PHY~Diffraction grating EXP
2009-10-06 3:19 am
回答 (2)
2009-10-06 5:53 am
✔ 最佳答案
The advantage is:The distance measured is increased, with the same precision of the apparatus, the percentage error can be reduced.
The disadvantage is:
The second order spectrum is wider than the first order spectrum, in which the center position is more difficult to be determined.
參考: Physics king
2009-10-09 9:20 pm
COPY
The advantage is:
The distance measured is increased, with the same precision of the apparatus, the percentage error can be reduced.
Disadvantange:
1) Some fringes will overlap, so you can't easily distinguish the fringe.
2)The intensity is lower so it will be harder for you to identify the fringes.
The advantage is:
The distance measured is increased, with the same precision of the apparatus, the percentage error can be reduced.
Disadvantange:
1) Some fringes will overlap, so you can't easily distinguish the fringe.
2)The intensity is lower so it will be harder for you to identify the fringes.
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