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Apertures and diffraction patterns, Operating instructions – PASCO OS-9179 Diffraction Slit Sets User Manual

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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.

This manual is related to the following products: