After that we use a vernier caliper to measure the length between middle of

# After that we use a vernier caliper to measure the

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After that, we use a vernier caliper to measure the length between middle of spot and the blank on screen that the length is 2.72nm. And the wavelength of laser is 650nm. The distance between the slit and the screen is 40cm. After calculation, we get that the width of a single hair is 95.58 μm. We also know that the normal width of a single hair is 90μm.(source from ) The reason why the data we collected was different from the standard is that there might be an error when we measured the length between the spot and the blank. Because of the light condition, we might not get the accurate data. Experiment 3 Introduction We change the single slit to the double slit, and we try to find the width of the slit. Procedure In the first step we find that it is a little bit different on the screen than the single on, and we measure the distance between two picks of diffraction. Then we change the equation from dy/L=n λ to d=nλ/(y/L). When we get d, compare it to the standard width, we can find the percent error as we shows in Data(2) Experiment 4 Introduction We switch the multiple slit set from 2-5 to figure out multiple slit interference.

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• Fall '12
• BorisSinkovic
• Light, Wavelength

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