The purpose of this experiment is to measure the thickness of a human hair by applying Young's double slits experiment.
Data:
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| A strand of hair is used as a slit in the experiment |
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| Setup of apparatus used for experiment |
Using a red laser (660nm wavelength), an interference pattern was projected onto a white board.
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| Interference Pattern |
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| Calculations of thickness of the hair |
L = distance between the card and the white board
d = width of the slit
We then used a micrometer to measure the thickness of the hair and verify the calculated value.
Micrometer measurement: 50 ± 20μm
Conclusion:
The Young's double slit experiment can be used to measure the thickness of human hair. The percent error was 65%, which falls within the range of uncertainty.
We then used a micrometer to measure the thickness of the hair and verify the calculated value.
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| Measuring the thickness using a micrometer. |
Conclusion:
The Young's double slit experiment can be used to measure the thickness of human hair. The percent error was 65%, which falls within the range of uncertainty.
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