PASCO OS-9179 Diffraction Slit Sets - Manual (Page 2)

scientific 2
012-01564C
APERTURES AND DIFFRACTION
PATTERNS
Specifications:
Material: .005 mm electroformed nickel
Tolerances: +/- .005 mm
Pattern Dimensions:
Figure 2 illustrates the relationship between the slide label
and the aperture or diffraction pattern dimensions. Enlarge-
ments of patterns 'C' and 'D' are also represented.
A B C D
PATTERN A B C D
NO. SLITS 2 2 2 2
SLIT WIDTH .04 .04 .04 .04
SLIT SPACE .250 .500 .250 .500
FIGURE 1
Aperture 'A' (furthest on the left) is circular in shape with a
.04 mm diameter.
Aperture 'A' (second to the left) is circular in shape with a
.08 mm diameter.
X
Y
X
Y
X
Y
X
Y
X Y
Pattern 'C'
Pattern 'D'
Note: The black areas in Pattern 'C' and 'D' repre-
sent the actual hole-pattern
Dimensions for both Pattern 'C' and 'D':
x = .025 mm
y = .075 mm
Operating Instructions
Place the steel pads of any slide against the magnetic surface
of the component holder and move the slide until the desired
slits are in the proper position.
Note: It may be necessary to use an Aperture Mask
(such as PASCO Model OS-9139) on the opposite
side of the component holder to insure that light is
incident on only one pattern at any given time.