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# 마이켈슨 간섭계와 브래그 회절

저작시기 2007.11 |등록일 2009.12.22 MS 워드 (docx) | 10페이지 | 가격 400원

## 소개글

Electromagnetic wave has been widely adopted in our everyday life and technology including telecommunications, medical science, and etc. Even though the term electromagnetic wave comes to many people as somewhat unaccustomed, the physical property of electromagnetic wave is not different from that of normal optical waves. Its wave like property can be best demonstrated by two sets of experiments: Fabri-Perot Interferometer and the famous, Michelson Interferometer.
Moreover, its wave like property being involved in the diffraction can also be practically used to investigate the molecular structural property of a particular crystalline matter, best experimentally demonstrated as “Bragg Diffraction”

## 목차

Ⅰ. Introduction
Ⅱ. Theoretical Background
1.Fabry-Perot Interferometer
2.Michelson Interferometer
3.Bragg Diffraction

Ⅲ. Experimental Procedure
1.Experiment #1 Fabry-Perot Interferometer
2. Experiment #2 Michelson Interferometer
3. Experiment #3 Bragg Diffraction

Ⅳ. Experiment Result and Analysis
1.Experiment #1 Fabry-Perot Interferometer
2.Experiment #2 Michelson Interferometer
3.Experiment #3 Bragg Diffraction

Ⅴ. Conclusion

## 본문내용

From the experiment #1 Fabry-Perot Interferometer, we could see how the intensity measured by the receiver varied with respect to the position of partial reflector. From calculating the average spacing between consequent intensity minima, we could reversely deduce the wavelength of the electromagnetic wave, which had the percentage error only -6.32%.
From the experiment #2, Michelson Interferometer, we could see how the intensity measured by the receiver varied with respect to the position of the reflector. By the procedure similar to that of the experiment #1, we could also deduce the wavelength with the percentage error only 1.40%.
From the experiment #3, we could demonstrate the Bragg diffraction by using a set of poles constructed between two parallel boards. The grazing angle was changed to find the angle that would maximize the intensity. From the measurement, the two peaks occurred near 39 degrees and 55 degrees. Substituting this into the Bragg Law, we could calculate the wavelength of the electromagnetic wave, which had the percentage error -29.4%. We think the errors are due to the fact that our data were so discrete that the maximum value may not be accurate enough.