- #1
Phys12
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- 42
- TL;DR Summary
- What values would d,D,and w take if Jonsson’s apparatus were simply scaled up for use with visible light rather than electrons?
In the prompt 4c in this problem set: https://ocw.mit.edu/courses/physics...-i-spring-2013/assignments/MIT8_04S13_ps1.pdf. We are asked to find out how d, D and w will change (where d is the slit width, D is the distance from the slits to the screen and w is the distance between adjacent maxima in the interference pattern) if the apparatus were to be scaled up for use with visible light rather than electrons. In part 4a, we found out that the relationship between these variables is ##w = \frac{Dh}{dp}## or ##w = \frac{D \lambda}{dp}##. The answer for 4c is (https://ocw.mit.edu/courses/physics...pring-2013/assignments/MIT8_04S13_ps1_sol.pdf) that we would scale each quantity by the ratio of the wavelength of the photon to the wavelength of the electron used earlier. Why is that the case? I don't think I understand what it means to scale up the apparatus for use with visible light. Why would you want to scale it up? To make sure that w stays the same? But if that were the case, in the answer, w's value would be the same...