PASCO OS-8453 High Precision Diffraction Slits - Manual (Page 2)

®
H i g h P r e c i s i o n D i f fr a c ti o n S l i t s O S- 8 4 5 3
2
About the Diffraction Slits and
Other Apertures
Single Slits Wheel
Circular Apertures
The two circular apertures have diameters of 0.2 mm and
0.4 mm.
Single Slits
The four singles slits have widths of 0.02 mm, 0.04 mm,
0.08 mm, and 0.16 mm.
Variable Slit
The “Variable Slit” is a wedge-shaped aperture ranging from
0.02 mm to 0.20 mm wide. Rotate the wheel to illuminate any
point along the length of the slit.
Square Pattern
Transparent
squares are
arranged in a grid.
Each square is
0.107 mm wide.
The center-to-cen-
ter spacing between
adjacent squares is
0.109 mm.
Hex Pattern
Transparent, equi-
lateral triangles
are arranged as
illustrated.
Dots Pattern
100 opaque circles
are scattered on a
transparent back-
ground as illus-
trated.
Holes Pattern
100 transparent
circles are scat-
tered on an opaque
background. The
holes pattern is the same as the dots pattern, but with transparent
and opaque areas switched.
Line
The opaque line on a transparent background is 0.08 mm wide.
Line/Slit Comparison
The opaque line on a transparent background and the transparent
slit on an opaque background can be illuminated simultaneously.
The line and slit are each 0.040 ± 0.005 mm wide.
0.02 mm
0.107 mm
0.107 mm
0.02 mm
1.6 mm
diameter
0.06 mm
diameter
transparent
slit
opaque
line