PASCO OS-8523 SLIT ACCESSORY - Manual (Page 4)

1
012-05880D Slit Accessory
®
Introduction
The PASCO OS-8523 Slit Accessory is used with the
PASCO OS-8525 Laser Diode on the optics bench in the
PASCO OS-8515 Basic Optics System. This set of two
disks has many different types of slits for diffraction and
interference experiments. The special comparison
patterns have two different slits spaced close enough
together so they can both be illuminated by a single laser
beam at the same time. This allows the student to
compare the two different patterns side-by-side so they can
see their similarities and differences.
OS-8523 Slit Accessory specifications :
The contents of the Single Slit Disk are: (See Figure 1)
– 4 single slits (slit widths 0.02, 0.04, 0.08, 0.16 mm)
– 1 variable slit (slit width varies from 0.02 to 0.20
mm)
– 1 square pattern
– 1 hexagonal pattern
– 1 random opaque dot pattern (dot diameter = 0.06
mm)
– 1 random hole pattern (hole diameter = 0.06 mm)
– 1 opaque line of width 0.08 mm
– 1 slit/line comparison, line and slit have similar width
(0.04 mm)
– 2 circular apertures (diameters 0.2 mm and 0.4
mm)
SI
NG
LE
SL
ITS
AP
ER
TU
R
E
S
PA
TT
ER
NS
VAR
IAB
LE
SL
IT
0.
4m
m
0.
2m
m
a= 0.0 8
D
IA
0.16
0.0
8
0.
04
0.
02
a=
:
HOL ES
S
EE
M
A NU
AL
FO
R
DIM
ENS
IO NS
DO
TS
HE
XE
S
S
Q U
A R
ES
a =
0.02
to
0.2
0
BASIC OPTICS
SLIT ACCESSORY
OS-8523
SINGLE SLIT SET
a=
:s
lit
w
id
th
in
m
m
LIN E
DI
A
LIN
E/S
LIT
CI
RC
U
LA
R
646-05865
Figure 1: Single Slit Disk
NOTE: Due to limitations of the photographic pro-
cess used to produce the slit film, the line and slit
may not be exactly the same width.
The contents of the Multiple Slit Disk are: (See Figure 2)
– 4 double slits (slit width/separation in mm: 0.04/
0.25, 0.04/0.50, 0.08/0.25, 0.08/0.50)
– 1 variable double slit (slit separation varies from
0.125 to 0.75 mm with constant slit width 0.04
mm)
– 4 comparisons: single/double slit with same slit
width (0.04 mm)
– double/double slit with same slit width (0.04
mm), different separation (0.25 mm/0.50 mm)
– double/double slit with different slit widths (0.04,
0.08 mm), same separation (0.25 mm)
– double/triple slit with same slit width (0.04 mm),
same separation (0.125 mm)
– set of 4 multiple slits (2, 3, 4, 5 slits) with same
slit width (0.04 mm), same separation (0.125
mm)
DO
UB
LE
SL
ITS
MU
LT
IPL
E
SL
IT
S CO
M
PA
RIS
ONS
VARIA
BLE
DO
UB
LE
SL
IT
5
4
3
2
a=
0.0
4
d
=
0.
12
5
0.08
0.50
0.0
8
0.2
5
0.
04
0.
50
0.
04
0.
25
a=
:
d=
:
a =
0.0
4
d =
0.12
5 to
0.7
5
d=
:s
lit
se
pa
ra
tio
n
in
m
m
a=
:s
lit
w
id
th
in
m
m
BASIC OPTICS
SLIT ACCESSORY
OS-8523
MULTIPLE SLIT SET
a= 0.04 0.04
d= 0.25
a= 0.0
4 0.0
4
d= 0.2
5 0.5
0 a=
0.0
4
0.08
d=
0.2
5
0.2
5
a=
0.04
0.04
d=
0.1
25
0.12
5
646-05865
Figure 2: Multiple Slit Disk