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PHS1022 - Fields and quantum physics - S2 2025
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When dealing with two slit interference the formula we have
.
In this equation, describes the
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Consider the following code:
import sympy as sp
sm=sp.Symbol(
"m")
sYm=sp.Symbol(
"Ym")
sl=sp.Symbol(
"lambda")
sd=sp.Symbol(
"D")
expry=sYm/(sl*sd)
um=sp.Symbol(
"um")
uYm=sp.Symbol(
"uYm")
ul=sp.Symbol(
"ulambda")
ud=sp.Symbol(
"uD")
derivs=np.array(expry.diff(symbols)) derivs=derivs*np.array([um,uYm,ul,ud])
derivs=np.dot(derivs,derivs)
expr_y_f=sp.lambdify([sm,um,sYm,uYm,sl,ul,sd,ud],expry)
u_expr_y_f=sp.lambdify([sm,um,sYm,uYm,sl,ul,sd,ud],derivs)
What does this code do?
Which of the following is an accurate description of diffraction?
Suppose there is a bright fringe at P. Would this bright fringe move closer to O, move further away, or be unchanged, if the red light was replaced with blue light?
Suppose there is a bright fringe at P. Would this bright fringe move closer to O, move further away, or be unchanged, if the red light was made more intense?
Suppose there is a bright fringe at P. Would this bright fringe move closer to O, move further away, or be unchanged, if the separation, d, of the slits was reduced?
The figure below shows how a double-slit interference pattern is produced on a screen for monochromatic light.
In terms of the wavelength of the light λ, and what is the value for the path difference x = r1 – r2 if at the point P on the screen there is a bright region (and no other bright region between O and P)?
The figure below shows how a double-slit interference pattern is produced on a screen for monochromatic light.
The wavelength of the light is λ. what is the value for the path difference x = r1 – r2 if at the point P on the screen there is a dark region (and no other dark region between O and P)?
A laboratory experiment produces a double-slit interference pattern on a screen. If the screen is moved farther away from the slits, the fringes will be
Phase differences between two waves from sources at some distance from an observation point can be created through which of the following?