WOLFRAM NOTEBOOK

WOLFRAM|DEMONSTRATIONS PROJECT

Fraunhofer Diffraction at Multiple Slits

​
number of slits, cm
15
distance between slits, cm
0.04
width of slit, cm
0.07
distance from center, cm
0.085
wavelength, cm
0.00005
distance of slit to screen, cm
22
plots
combined plot
The intensity in a Fraunhofer diffraction pattern for multiple slits is given by:
I=
2
sin
πbX
λd
2
πbX
λd
×
2
sin
NπaX
λd
2
sin
πaX
λd
,
where
λ
is the wavelength of the light,
d
is the distance of the diffracting slit from the screen,
a
is the distance between slits,
b
is the width of the diffracting slit,
X
is the range of the diffraction pattern on the screen (measured from the center of the space between the edges of the geometrical shadow) and
N
is the number of diffracting slits. The abbreviation a.u. means arbitrary units.
Wolfram Cloud

You are using a browser not supported by the Wolfram Cloud

Supported browsers include recent versions of Chrome, Edge, Firefox and Safari.


I understand and wish to continue anyway »

You are using a browser not supported by the Wolfram Cloud. Supported browsers include recent versions of Chrome, Edge, Firefox and Safari.