A film is said to be thin if its thickness is
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A film is said to be thin if its thickness is comparable with one wavelength of light.
Explanation:
- The thickness of thin-film may be few nanometers to about several micrometers for a specific application.
- The thickness of a thin film can be measured by the phase difference of the interferograms that is generated on the upper and lower surfaces of the thin film .
- Interference in thin films can be beneficial as well as harmful. Constructive interference causes the intensity of light of a specific wavelength to increase where as destructive interference reduces the intensity of light at a specific frequency.
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