Table 1. Slit spacing, distance from the diffraction grating to the screen, distance from the central maximum to the
1
st
order maximum, distance from the central maximum to the 2
nd
order maximum, angle of diffraction to
the 1
st
order maximum, angle of diffraction to the 2
nd
order maximum, sine of the angle of diffraction of the
1
st
order maximum, and sine of the angle of diffraction of the 2
nd
order maximum, of a red laser passing
through diffraction gratings projected on to a screen so that exactly five bright spots appear on the screen.
Wavelength
λ
= 650 nm
Diffraction
grating slit
spacing,
d
(mm)
Distance
from the
diffraction
grating to the
screen,
x
(cm)
Distance from
the central
maximum to
the 1
st
order
maximum,
y
1
(cm)
Diffraction
Angle of 1
st
order
maximum,
Ɵ
1
(
o
)
Linearized
Diffraction
Angle of 1
st
order
maximum,
sin(
Ɵ
1
)
Distance from
the central
maximum to
the 2
nd
order
maximum,
y
2
(cm)
Diffraction
Angle of 2
nd
order
maximum,
Ɵ
2
(
o
)
Linearized
Diffraction
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 Spring '09
 Ramesh
 Physics, Diffraction, Diffraction grating, order maximum

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