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mss90
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Homework Statement
particle pass through a slit of width 0.200mm. the wavelength is 633nm. after it pass through the slit they spread out over a range of angles . use uncertainty principle to determine the min. range of angles.
Homework Equations
(delta)p*(delta)y = h/4(pi)
The Attempt at a Solution
I have done some calculations using Heisenbergs uncertainty principle but nothing like this.
I usually did it in y-direction but it seems this one needs to be done in x direction so I though;
(delta)px*(delta)x = h/4(pi) but would (delta)x be the width of the slit or the uncertainty of the particles in x-direction after passing through the slit? Also, how would (lambda) be integrated into this? The only thing I can think of is to use (delta)E * (delta)t = h/4(pi) and set E = hc/(lambda), however that would just give me the time? or use h/(lambda) * (delta)x = h/4(pi)
Need some hints here..
R
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