Download Optics - Frederiksen

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Optics
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science
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Optics
2946.00
Optical bench
Base for optical bench
Stable optical bench offering a convenient way of carrying
out optical experiments as well as different experiments with
radioactive sources.
The bench is made of black-anodized aluminium and equipped with ruler on the side.
Supplied with the following standard equipment:
2946.30 Base for optical bench (single)
– 2 sliding saddles (no. 2946.20) with Ø 10 mm hole for fixing
various equipment.
– 1 sliding saddle (no. 2946.20) for optical disc.
– 2 bases with rubber pads and levelling screws (no. 2946.30).
Total length 1000 mm. Cross section 26 x 82 mm.
Base with rubber pads and two levelling screws, in black
anodized aluminium.
Length: 125 mm, Height: 50 mm, Width: 25 mm.
Extension sections for optical bench
Black-anodized extension section for the optical bench
2946.00 Equipped with a ruler. Base (2946.30) is not included.
2946.40 Section for optical bench 600 mm
2946.45 Section for optical bench 1000 mm
2946.46 Section for optical bench 2000 mm
2946.00 Optical bench
Joint Link for optical bench
Sliding saddle
Joint link in black-anodized aluminium with degree scale for
coupling of the optical bench to the extension section.
For optical bench 2946.00. For fixing of optical equipment
with max. 10 mm diameter fixing rod. Made of black-anodized
aluminium with thumb screw and measuring line.
Dimensions: 35 x 50 x 84 mm.
2946.10 Sliding saddle
2946.50 Joint link for optical bench
Profiled rail
Short section of the same profile as used in the optical bench –
without ruler, base and sliding saddles. Length 370 mm.
2946.35 Profiled rail
Sliding saddle for optical disc
As 2946.10 but with the hole off-centre. Needed for 2900.00
optical disc. (Also used in 5142.00 muon observatory.)
2946.20 Sliding saddle for optical disc
2946.10
2946.40
2946.35
2946.20
2946.50
2946.10
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2946.30 (x2)
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Student Reuter lamp
This simple, high intensity light is very suitable for experiments
with lenses, prisms and optical gratings. The light source itself
is a small festoon lamp with the filament aligned with the supporting rod making it easy to position on an optical bench. The
long, narrow filament is ideal for performing experiments with
lens optics and gratings. The lamp housing is supplied with
a cooling fan which keeps the housing cool enough to touch
even though the lamp is rated at 15 watts of electrical power.
2800.30 Student Reuter lamp
2800.30
2800.50
Experiment lamp
This lamp emits a bright beam of light, ideal for many types of
experiments and demonstrations. Focus and filament position
are easily adjusted.
Provided with safety jack connectors and a Ø 10 mm mounting
rod for use on an optical bench or with a laboratory stand.
A 50 W halogen lamp is included.
During operation the lamp housing is ventilated by means of a
built-in ventilator, so the surface temperature of the housing will
not exceed 60 °C.
The Reuter Lamp has both a bi-pin socket for halogen lamps
12 V/50 W (item no. 4270.10) and a bayonet socket for 12 V/35
W lamps (item no. 4265.40).
Length: 310 mm. Width: 76 mm. Height: 105 mm (excluding
mounting rod).
Power supply needed: 12 V AC/DC, minimum 3 A (35 W lamp)
or 4.2 A (50 W lamp).
2800.50 Experiment lamp
Aperture holder for experiment lamp
Holder for apertures, colour filters, etc.
The aperture holder fits the lens mount of the experiment lamp.
It is rotatable and can be used for apertures or filters mounted
in standard slide frames.
2800.55 Aperture holder
3055.00
3055.10
Ground glass screen
Made of Plexiglas.
Height 250 mm, width 250 mm, with 10 mm fixing rod.
3055.00 Ground glass screen
White screen
In laminated plastic with white
surface.
Height 250 mm, width 250 mm,
with 10 mm fixing rod.
3055.10 White screen
science
2800.55
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Optics
Lenses and apertures
Lenses in holder
For use with the optical bench. Lens diameter 50 mm. Mounted
in rectangular plastic plate 100 x 100 mm with 10 mm stainless
steel rod and printed focal length.
2950.10-30
2950.10
2950.20
2950.30
2950.40
Lens
Lens
Lens
Lens
in
in
in
in
holder,
holder,
holder,
holder,
+ 300 mm
+ 100 mm
+ 50 mm
- 200 mm
5760.40 Storage block for 6 lenses
5760.40
2950.40
Iris diaphragm
2960.00
Maximum aperture 28 mm. Black 100 x 100 mm plastic screen
with Ø 10 mm fixing rod.
2960.00 Iris diaphragm
Lens and slide holder
2902.01
2903.00
A versatile holder made to fix slides max. 50 x 50 mm and
Ø 50 mm lenses.
Two spring loaded clips allow you to fix up to 16 mm thick lenses and slides. Supplied with a 10 mm diameter steel rod for
fixing in an optical bench etc. Overall length 170 mm.
2902.01 Lens and slide holder
Set of lenses 50 mm diameter
2946.10
This set of lenses comprises 6 different lenses Ø 50 mm. The
lenses can be mounted in lens and slide holder 2902.01. The
set of lenses may be used for a number of optical experiments
but are also specified to be particularly well suited for laser
experiments. A storage box is included.
The set comprises lenses with the following focal lengths:
Biconvex: 50, 100, 200, 1000 mm.
Biconcave: 50 and 100 mm.
2903.00 Set of lenses 50 mm diameter
Adjustable slit
3230.00
Slit length 42 mm, width continuously adjustable to a maximum of approximately 9 mm by means of a spring loaded
knurled knob. Made of black coloured brass, placed in a
black-anodized aluminium square, 150 mm side length with
10 mm steel rod. The adjustable slit can be positioned vertically or horizontally.
3230.00 Adjustable slit
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Slits and filter holder
Designed to accept slits and filters etc. 50 mm square of
maximum 3.5 mm thickness. Black 100 x 100 mm plastic
screen with Ø 10 mm fixing rod.
2950.80 Slits and filter holder
50 x 50 mm optical components
2950.80
All of these are mounted in glass-less slides, unless otherwise
noted.
2
Single slits, various widths
This aperture consists of five different slit widths for
demonstrations of diffraction patterns:
0.04 – 0.08 – 0.14 – 0.20 – 0.26 mm. Size: 50 x 50 mm.
3230.10 Single slits, various widths
Double slit
Mounted in a slide between two glass plates.
Spacing between slits 0.1 mm.
3240.10 Double slit
Triple slit
Spacing between slits 7 mm, slit width 1 mm.
3010.00 Triple slit
Seven slits
Spacing between slits 5 mm, slit width 0,8 mm.
3010.05 Seven slit
Arrow aperture
Slit width 1.5 mm. The slit is shaped like an arrow.
3010.10 Arrow aperture
“F” slit
Slit width 1 mm. Used in optical
experiments; the asymmetrical shape
reveals whether the picture is horizontally
or vertically inversed.
3010.20 “F” slit
Slides with circular
aperture
3006.00 Slide, Ø 1 mm hole
3006.10 Slide, Ø 2 mm hole
3006.20 Slide, Ø 4 mm hole
Frosted Glass
Glass square 50 x 50 mm made of frosted
Plexiglas. Fits standard slit support.
Well suited to optics experiments.
3010.50 Frosted glass
3010.50
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Optics
Reflection and refraction
Plane mirror
Glass mirror, back-silvered with protective coating.
Rectangular 180 x 120 mm.
3040.20 Plane mirror
Prism table
Circular disc Ø 62 mm mounted on Ø 10 mm rod. With
adjustable spring loaded clamp to accommodate prisms from
10 to 50 mm high.
2990.00 Prism table
2990.00
3040.20
Mirror, concave and convex
Back-silvered Ø 115 mm spherical mirrors 190 mm focal
length, mounted back to back in a metal frame.
The frame is mounted on a 10 mm rod, length 100 mm.
3065.00 Mirror, concave and convex
Prism, equilateral
Glass prism with polished faces. Triangle side 34 mm, height
35 mm.
2985.00 Prism, equilateral
Newton’s prism
As item 2985.00 but with triangle side length 34 mm and
height 25 mm.
2985.10 Newton’s prism
Glass Prism, right angle
Side lengths: 40 mm and 54 mm, height: 40 mm.
2985.15 Glass prism, right angle
Set of mirrors,
convex/concave
Crown glass prism
Triangle side 30 mm, height 30 mm.
2985.20 Crown glass prism
Two mirrors, one
concave and one
convex.
Fits holder 2902.01.
Diameter 50 mm, focal
length +/- 100 mm.
3065.00
Flint glass prism
Triangle side 30 mm, height 30 mm.
2985.30 Flint glass prism
2903.10 Set of mirrors,
convex/concave
2985.00-30
2995.00
Rectangular prism, glass
Four-sided prism with polished
surface for experimenting with path
of rays in plan parallel objects.
Dimension: 60 x 20 x 20 mm.
2995.00 Rectangular prism,
glass
2903.10
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Prism, hollow 60°
Hollow prism with 3 mm glass sides and a detachable top.
Outer length 68 mm. Height 53 mm.
For demonstrating refraction in liquids.
3000.00 Prism, hollow 60°
3000.00
8299.00
5459.20
Sugar prism
The sugar prism is used for measuring the sugar concentration
in liquids, e.g. juice. Using a number of reference solutions with
known sugar content one can compare the refraction of light,
e.g. a laser beam, of reference samples and an unknown solution. Supplied with complete instructions for student projects
and experiments.
Sodium fluorescein
When hit by shortwave light, fluorescein lights up with a bright
yellowish hue. It is useful for showing the path of a light ray in
a transparent liquid. Visible light or a blue or violet laser beam
can be used. Sodium fluorescein can be supplied either as a
powder or in solution.
5459.20 Sugar prism
8298.00 Sodium fluorescein, powder, 50 g
8299.00 Sodium fluorescein, solution, 200 mL
Light refraction tank
Mirror, rotatable with indicator needle
This Plexiglas tank is supplied with plane parallel sides. One of
the corners in the bottom is cut off at a 45° angle to facilitate
the entry of light rays. It is ideal for optical experiments with
refraction and (total) reflection.
To make the light rays visible in the water, a small amount
of chalk powder can be suspended in the liquid. If the light
source is white light or a blue or violet
laser like our 1420.95, a little
fluorescein will give very good
results.
To make the rays visible in the air
above the water, blow a little smoke
into the tank.
Size: 370 x 130 x 150 mm.
This rotatable mirror is mounted on a stand. Useful for directing
the light beam as desired inside the refraction vat.
3025.00 Mirror, rotatable with indicator needle
3025.00
3015.00 Light refraction tank
Lid for 3015.00
Needed to keep smoke inside the tank.
3015.10 Lid for 3015.00
3015.00
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Optics
Geometrical optics
Optical disc
A 25 cm diameter white faced disc clearly marked at every 5°
and with crosshairs at 90° to mark the centre. The disc can be
rotated around the centre. The stand provided fits the special
2946.20 sliding saddle. The optical disc is equipped with a
holder for optical components from e.g. the 2902.00 optics kit.
2900.00 Optical disc
Optics kit
2900.00
A complete set of 19 mm thick acrylic
prisms, lenses and mirrors suitable for
doing all of the classical optics experiments. Supplied in a partitioned storage
box. All the acrylic blocks are made of
clear polished acrylic resin free from
striae and bubbles. Bottom surfaces
are ground to show ray tracks. The
kit comprises the following items
which may also be supplied separately: 2905.00/20/30/40/50/60
and the mirrors 2908.00 and
2910.00.
2902.00 Optics kit
Smoke lenses, set of 4
Optics experiments will never be the same without
smoke lenses once you have tried them. Students
can see the light as it passes through the lenses.
Refraction and internal reflection are observed with
a clarity never seen before. Especially well suited for
experiments with lasers. The set comprises 4 blocks
20 mm thick made of a special acrylic resin: 2 convex
lenses 50 and 100 mm focal length, 1 prism 90°, 45°,
45° and 1 rectangular prism.
2912.00 Smoke lenses, set of 4
2902.00
Acrylic plastic blocks
For refraction experiments. Clear 19 mm thick, polished
blocks, free from striae and bubbles. Bottom surfaces are
ground to show ray tracks.
No.Type
Dimension
2905.00
2905.10
2905.20
2905.30
2905.40
2905.50
2905.60
90°, 45°, 80 x 56 mm.
Equilateral, side 64 mm.
79 mm, radius 205 mm.
79 mm, radius 205 mm.
Side 75 x 25mm.
80 mm diameter.
Total Length: 100 mm
Triangular prism
Triangular prism
Biconvex lens Biconcave lens
Rectangular prism
Semicircular lens
Trapezoidal prism
2912.00
2908.00 Plane mirror glass, back-silvered, mounted on a hardwood block. Side length 90 mm.
2910.00 Cylindrical mirror. Made of nickel-plated brass. Side length 110 mm.
2905.00
2905.20
2905.30
2905.10
2910.00
2905.60
2905.40
®
2905.50
2908.00
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Candle holder on support stand
This candle holder is useful in experiments with image
formation using convex lenses. The stand is supplied with a
moveable candle holder so that the candle can be placed at
just the right height. Height: 65 mm.
2820.00 Candle holder on support stand
Candle holder
2820.10
2820.00
This holder is designed for candles (item no.
2810.00). The holder is supplied with a
Ø 10 mm rod which fits standard
laboratory support hardware. Height: 55 mm.
4130.10
2820.10 Candle holder
Lamp holders E14/E27 for
mains connection
Optical set with light box
Very comprehensive set for teaching geometrical optics and
mixing of colours.
The set is consisting of a light box with a 12V halogen bulb,
different lenses, slits, colour filters and mirrors. 24 parts.
2935.00 Optical set with light box
Mounted on a 10 mm diameter rod,
supplied with cable and 230 V plug.
Stand base is not
included (shown
with 0004.10).
4130.10 Lamp
holder E27
4130.20 Lamp
holder E14
2935.01
2935.00
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Optics
Optics set, image formation
Lenses mounted in holder with
surrounding black screen
For student use. 40 mm lenses mounted in rectangular plastic
plate 80 x 120 mm with a heavy nickel-plated brass base. Engraved focal distance. Centre height 83 mm. Can be used with
light source no. 2800.30, slits and filter holder no. 2970.00.
2965.00
2965.10
2965.20
2965.30
Lens
Lens
Lens
Lens
in
in
in
in
holder,
holder,
holder,
holder,
+ 300 mm
+ 100 mm
+ 50 mm
- 200 mm
2965.00-.30
Slits and filter holder
Designed to accept slits and filters etc. of size 50 mm square by
a maximum of 3.5 mm thickness. 80 x 120 mm plastic screen
with heavy nickel-plated brass base. Centre height 83 mm.
2970.00 Slits and filter holder
Glass plate
Plane rectangular 180 x 120 mm, 2 mm thick.
3040.00 Glass plate
Glass plate, frosted
Plane rectangular
180 x 120 mm, 2 mm
thick.
2970.00
3040.10
3040.10
Glass plate,
frosted
3040.10
3040.20
Plane mirror
Glass, back-silvered
with protective coating.
Rectangular
180 x 120 mm.
3050.00
3040.20
Plane mirror
Screen
White cardboard plate. Dimensions: 180 x 120 mm.
3040.30 Screen
3040.00-.20-.30
Holder for screens and mirrors
In polished 1 mm stainless steel. Width 20 mm, height 40 mm.
3050.00 Holder for screens and mirrors
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Colours
3089.00-.60
Colour filters, foil
These transparent coloured foils are supplied in rolls of
50 x 122 cm. These colour filters are reasonably selective and correct compared with the international colour
standards. The filters can be cut into A4 format or other
appropriate sizes for use on overhead projectors or e.g. 6 x 6
cm sizes for student use.
3089.00
3089.10
3089.20
3089.30
3089.50
3089.60
Colour
Colour
Colour
Colour
Colour
Colour
filter,
filter,
filter,
filter,
filter,
filter,
3085.00-.30
primary red
yellow
primary green
primary blue
cyan
magenta
3090.90
Colour filters, acrylic
Colour filters produced with 3 mm thick, 50 x 50 mm acrylic plates suitable for use with the aperture supports items
2950.80 and 2970.00.
3085.00
3085.10
3085.20
3085.30
Colour
Colour
Colour
Colour
filter,
filter,
filter,
filter,
red
yellow
green
blue
3202.00
Coloured filters, 10 pieces
Set of coloured filters mounted in slides. Yellow, ruby, blue, red,
green, cyan, magenta, purple, mat.
3090.90 Coloured filters
Colour disc
3200.00
Made of thick cardboard, Ø 300 mm, with three sets of
seven spectrum colours correctly proportioned to appear
white when rapidly rotated.
3200.00 Colour disc
Whirling apparatus
For rotation of colour disc no. 3200.00. Consists of a handle
with a spindle and pulley with cord for rotation of spindle. The
colour disc is fixed by an 8 mm knurled nut. Length 160 mm,
diameter 25 mm.
2025.00
3202.00 Whirling apparatus
Motor/generator
Our universal 12 V motor is ideal for bringing the colour disc
in rotation.
Detailed description on page 72.
2025.00 Motor/generator
Discs with black/white patterns
The set contains two discs. They create the sensation of a
colour spectrum when rotated slowly. Disc diameter: 120 mm.
The discs can be used with motor/generator 2025.00.
3205.00
3205.00 Discs with black/white patterns
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Optics
Spectral lamps
Spectral lamps, Osram
A powerful light source for
producing line spectra or
monochromatic light when used with
the appropriate filters.
Lamps with 9 pole Pico sockets with
external gas glow head for visible
spectral emission.
Length: 100 mm.
Diameter: 20 mm.
For mounting inside spectral lamp
housing no. 2830.50.
2835.00 Spectral
2835.20 Spectral
2835.30 Spectral
2835.40 Spectral
2835.50 Spectral
2836.10 Spectral
lamp
lamp
lamp
lamp
lamp
lamp
2830.50
2830.60
Na-10
Cd-10
He-10
Ne-10
Zn-10
Hg-100
2835.00-2836.10
2836.50-70
Lamp holder for Osram spectral lamps
Spectral lamps with E-27 socket
The well known lamp holder for Osram spectral lamps has
a built-in cooling fan to keep the surface temperature below
50 °C. Must be used with the control transformer no. 2840.50.
(Provided with a Ø 10 mm support rod that fits a threaded hole
on the back.)
Dimensions: 78 x 78 x 236 mm.
A low cost alternative to using the spectral lamps from Osram.
These lamps should be used with a special spectral lamp holder (no. 2830.60) as well as a control transformer (no. 2840.50).
2836.50 Spectral lamp with E-27 socket, Na
2836.60 Spectral lamp with E-27 socket, Hg
2836.70 Spectral lamp with E-27 socket, Ne
2830.50 Lamp holder for spectral lamps
Control transformer
Lamp holder for E-27 spectral lamps
Use with our spectral lamp holders – for both Osram and E-27
types. Max. 1 A.
Dimensions: Width 185, height 120, depth 220 mm.
Ventilated lamp holder for E-27 spectral lamps.
Must be used with control transformer 2840.50.
Dimensions 78 x 78 x 295 mm
2840.50 Control transformer (230 V)
2830.60 Lamp holder for E-27 spectral lamps
2840.50
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optics
Spectral tubes
Straight pattern, capillary length approximately 70 mm. Fitted
with a 6.5 mm diameter contact caps at each end.
For observing line and band spectra from various noble and
diatomic gasses.
For mounting inside spectral tube holder 2855.50 (previous
page).
2850.00
2850.10
2850.20
2850.25
2850.30
2850.40
2850.50
2850.60
2850.70
2851.10
2851.20
2851.30
2851.50
2851.80
Spectral
Spectral
Spectral
Spectral
Spectral
Spectral
Spectral
Spectral
Spectral
Spectral
Spectral
Spectral
Spectral
Spectral
tube
tube
tube
tube
tube
tube
tube
tube
tube
tube
tube
tube
tube
tube
Ne
Hg
H2
H2 Balmer
He
Ar
O2
Kr
N2
H2O
CO2
Xe
I iodine *)
Na and He*)
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Spectral tube holder and power supply
This holder makes the use of spectral tubes easier and
safer. The spectral tube is mounted from the front in the
insulated holders with electrodes, where the lower holder is spring
loaded parallel to the tube axis.
The holder is provided with a power supply which can deliver
6 kV DC at max. 2 mA to the electrodes built into the base of
the insulated holder.
Can be used with spectral tubes 2850.00 – 2851.30 and with
many other types of spectral tubes.
Dimensions: 78 x 78 x 290 mm. For 220 V AC.
2855.50 Spectral tube holder and power supply
2855.50
2850.00-70
2851.10-80
*) Please note:
As the elements iodine and sodium are solid at room temperature, the spectral tubes 2851.50 and 2851.80 will look ”dirty”
on the inside of the glass. The sodium may even have formed
a cast of the electrode, making it look broken. Normally, these
conditions do not affect the function of the tubes.
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Optics
Spectroscopy
2985.20-30
Prisms (equilateral)
High quality prisms suited for spectrometer no. 3215.30 to
measure spectral lines as well as to determine refractive
indices of prisms.
Dimensions: side length 30 mm, height 30 mm
2985.20 Crown glass prism
2985.30 Flint glass prism
Hand spectroscope, direct viewing
This high quality instrument gives bright and sharp spectra,
centred in the field of view. The instrument is based on a 600
lines per mm grating and allows observation of both emission
and absorption spectra.
Overall dimensions: Diameter 25 mm, length 105 mm.
3210.05
3210.05 Hand spectroscope, direct viewing
Spectrometer
This classical sturdy spectrometer
can be used with either a prism or
an optical grating.
The instrument is provided with
an easy to read vernier scale that
can be read directly in tenths of a
degree. The spectrometer is
supplied with a prism and grating
holder on an adjustable prism table.
The collimator and telescope are
fitted with 178 mm focal length
32 mm aperture achromatic
objectives. The telescope is fitted
with a Ramsden eyepiece and
crosshair reticle and a collimator
with an adjustable slit.
The telescope and collimator
mounting arrangement permits
accurate levelling of the axes.
The spectrometer table, diameter
85 mm, is marked with lines to
assist positioning of the prism in
relation to the levelling screw, and it
has interchangeable clamping units
for prism and diffraction gratings.
3215.30
3215.30 Spectrometer
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Diffraction gratings
Optical gratings, 24 x 36 mm
A grating mounted between two plane parallel plates of glass.
Frame area: 50 x 50 mm.
These gratings fit the filter holders 2950.80 and 2970.00.
Grating area: 24 x 36 mm.
3245.00 Optical grating, 300 lines/mm
3245.10 Optical grating, 600 lines/mm
3245.20 Optical grating, 1200 lines/mm
3245.00-20
Optical gratings, 30 x 45 mm
A grating mounted between two plane parallel glass plates.
Frame area: 48 x 63.5 mm.
These gratings are ideal for the 3215.30 spectrometer.
(They will not fit the 2950.80 or 2970.00 filter holders.)
Grating area: 30 x 45 mm.
3250.00
3250.10
3250.20
3250.30
Optical
Optical
Optical
Optical
grating,
grating,
grating,
grating,
3250.00-30
100 lines/mm
200 lines/mm
300 lines/mm
600 lines/mm
Diffraction grating
A demonstration slide consisting of three gratings with 100,
300 and 600 lines/mm respectively. Each has an area of
9 x 16 mm. They are mounted between plane parallel glass
plates in a cardboard slide 90 x 30 mm in size.
3260.00 Diffraction grating
Glass diffraction gratings
3260.00
Glass diffraction grating on a glass carrier. Grating surface
approx. 25 x 25 mm. Carrier surface 38 x 50 mm, thickness
4 mm, suited for spectrometer no. 3215.30
3255.05 Diffraction grating 300 lines/mm
3255.10 Diffraction grating 600 lines/mm
3255.05-10
Grating model, set of 4 kits
3244.00
It can sometimes be difficult for students to visualize the optical diffraction grating.
Standard gratings have very small gratings constants making the lines invisible to the
naked eye. Using machine screws and 0.30 mm nylon line it is possible to produce
your own simple optical grating. With a laser beam and a distance of 6 to 10 meters
from the grating to a projection screen it is possible to clearly see the diffraction
pattern caused by this large spacing grating. This device provides students with a
clearly visible example of an operating optical grating.
3244.00 Grating model, 4 kits
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Optics
He-Ne laser
The laser emits light with a wavelength of 632.8 nanometres.
The emitted light is coherent, i.e. wave fronts propagate in the
same phase over a large distance compared with ordinary light
sources. The emitted light is highly directional and the beam
diameter at the laser is about 0.5 mm increasing very gradually
at increasing distances from the laser. The light emitted is not
uniformly polarized but changes its polarization at random
around the direction of propagation. Light from the laser is
ideal for demonstrations of optical interference. If a line grating
is placed in the laser beam, the interference pattern will be
clearly visible on a projection screen. The laser can be used
for a wide range of applications in optics, communication etc.
2885.00
2885.00 He-Ne Laser, max. 1 mW
2885.10 He-Ne Laser, max. 2 mW
2885.20
He-Ne laser, modulated
Like 2885.00 but with the option of amplitude modulating the
light. The laser is provided with a BNC connector for connection to a function generator, CD-player or similar signal source.
Photodetector 4895.50 is a perfect match for demonstration of
optical communication.
Maximum modulation frequency: 1 MHz
2885.20 He-Ne laser, modulated, max. 1 mW
Laser objective
Needed when the laser beam is too narrow. Together with e.g.
an F = 100 mm lens this convex lens is useful for illumination
of a larger area of a diffraction grating or a slide with slits. The
objective is supplied with a threaded adapter for mounting to
the laser’s optics adapter.
0768.86
0768.86 Objective 10x achromatic, N.A. 0.25
Laser pointers
Easy to use pencil sized diode laser pointers. Runs on batteries. Can be used in interference experiments as well as in
geometrical optics.
Optical power is less than 1 mW (class II)
1420.70 Laser pointer, red (670 nm)
1420.80 Laser pointer, green (532 nm)
1420.95 Laser pointer, violet (405 nm)
Powerful laser pointers
These laser pointers are class IIIa and are not recommended
for students.
1420.75 Laser pointer class IIIa, orange (594 nm)
1420.85 Laser pointer class IIIa, blue (473 nm)
1420.75
1420.70-80-95
1420.85
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Photodetector
The photodetector is provided with a photo diode which gives
off an electrical signal proportional with the light intensity.
The signal can be applied to the built in loudspeaker or be used
for measurements via the AC and DC output connections. The
photodetector can be used for demonstrating communication
over a laser beam, fibre optic communication, plotting of interference patterns, etc. The maximum frequency is 1 MHz.
4895.50 Photodetector
4895.50
Fibre optics Set
For demonstration of optical communication with laser and
photodetector.
Comprises items 2887.00, 2886.10 and 4885.51 described
below.
2886.50 Fibre optics Set
Optical fibre
This flexible optical fibre guides light rays along curved
paths from one place to another. It can be readily cut to the
desired length. It can be used in electronics, models, data
transfer projects, etc. The external diameter of the fibre with
protective covering is 2.2 mm, while the optical fibre itself is
1 mm in diameter.
2887.00
2887.00 Optical fibre, per meter
Optical fibre holder
This threaded adapter has a centring hole and is designed for
optical fibre item no. 2887.00.
The cable is secured and centred by means of an O-ring.
2886.10 Optical fibre holder
Holder for optical fibre for photo detector
4885.51
2886.10
Fits the photo detector 4885.50 and the optical fibre 2887.00
4885.51 Holder for optical fibre for photo detector
Laser diffraction kit
This kit comprises 18 slides which allow performance and demonstration of e.g. Fraunhofer Diffraction, Fresnel Diffraction,
a number of other diffraction experiments.
3272.00
– Six slides with 1 to 6 slits. Width 0.06 mm,
distance 0.20 mm
– Slide with holes, Diameters 0.3 – 0.4 – 0.6 – 1.0 mm
– Three slides with coarse gratings
– Two slides with fine diffraction gratings
(80 and 300 lines per millimetre)
– Slide with a fine metal gauze (300 mesh)
– Slide with a tapered single slit
– Slide with a tapered double slit
– Two slides with polarizing filters
– Slide with a transmission hologram
The slides are labelled and come in a storage box complete
with an inventory list and brief experiment notes.
3272.00 Laser Diffraction kit
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Ultraviolet radiation
Ultraviolet light - properties and hazards
This equipment has been designed to illustrate the many interesting properties of ultraviolet light using protective film, clear
film, ordinary glass and a Schott UV filter.
Also useful for investigating skin protective sun cream.
UVA lamp
This UVA lamp emits both spectral light (4 lines from the
mercury spectrum) and a band of UV light in the range from
350 nm to 400 nm. The UV lamp is supplied with an ordinary
power plug (for direct connection to mains power).
Dimensions: 190 x 75 x 75 mm.
2871.00 UVA lamp
3075.00
The set comprises:
– UVA lamp no. 2871.00
– UVA probe no. 2872.00
– Accessory kit no. 2872.10 with filters and other materials
including fluorescent and phosphorescent plates.
Complete instructions included.
SAFETY NOTE: The light source is a UVA lamp emitting most
UV radiation in the range 350-400 nm with a maximum around
370 nm. These wavelengths pose a minimum risk to eyes and
skin, and the radiation does not generate harmful ozone.
2871.50 Ultraviolet radiation set
Additional equipment needed
Zinc sulphide screen
This phosphorescent screen will exhibit light emission some time after
is has been illuminated by ultraviolet
light. The screen can thus be used
to confirm that UV light is present
in a light source. Can be used with
UV accessory kit 2872.10, UV lamp
2871.00 and UV Probe 2872.00.
Screen size: 110 x 105 mm. Mounted
in a holder with a Ø 10 mm stainless
steel rod.
(Stand base is not provided.)
3075.00 Zinc sulphide screen
2515.60 battery box
3867.50 demonstration multimeter or any digital multimeter,
e.g. 3862.15.
2871.50
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Phosphorescent plate
Like 3075.00 but measures 70 x 95 mm. Unmounted.
3076.00
3075.10 Phosphorescent plate
3075.10
Fluorescent plate
This plate exhibits fluorescence when exposed to ultraviolet
light. In contrast to phosphorescent materials where visible
light emission persists some time after exposure to the UV,
fluorescent materials re-emit visible light only during exposure.
It can be used to demonstrate this phenomenon and to show
how some materials e.g. UV film in Accessory Kit 2872.10 filter
out UV light. Size: 70 x 95 mm.
3076.00 Fluorescent plate
UVA-accessories
UVA accessories consisting of standard glass plate, fluorescent plate, phosphorescent plate, UVA filter, UVA plastic film
and normal plastic film.
2872.10 UVA-accessories
2872.10
2872.00
UVA sensor, directional
Useful for investigating emission from the sun, halogen lamps,
solarium lamps etc. The well-defined bandwidth 370 nm
+/- 5 nm is ensured by a narrow band filter.
The sensor is provided with a 5-pole DIN connector and
requires a +5 V DC power supply. The sensor can be connected to a data logger or to an ordinary voltmeter via battery
box no. 2515.60.
Dimensions: Ø 24 x 99 mm.
2872.00 UVA sensor, directional
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Optics
Polarizing filters
Unmounted. Dimensions 50 x 50 mm. Pair.
3270.00
Polarizing filters
3270.11
3270.00
Polarizing filter
Sheet of unmounted polarizing filter, A4.
Can be cut with scissors.
3270.11 Polarizing filter
Apparatus for the study of light energy
Used to determine the energy efficiency of an incandescent
lamp. Apart from the lamp, the container contains a resistor
(with the same resistance as the lamp).
The container is filled with water and the amount of energy that
is converted into heat is calculated from the temperature increase of the system. The part of the electric energy that doesn’t
heat the water must have radiated away from the system.
Dimensions: Height 120 mm, diameter 70 mm.
3207.00 Apparatus for light energy
3207.00
The polarizing filters are supplied with a protective film on both
sides. Remove before use.
Lux meter YF 1065
This digital lux meter is a robust and handy item provided with
a separate safe-sealed photodetector for maximum stability.
The photodetector has good spatial response and will thus
respond to illumination from all directions.
An analog output signal is provided for connection a data
logger. This is useful when experimenting e.g. with photosynthesis. Supplied complete with a battery and a convenient
carrying case.
Measuring ranges:0-200 lux, 0-2000 lux, 0-20000 lux.
The angular response follows the cosine response with the
following deviations: 30°: < ±2%. 60°: < ±7%. 80°: < ±5%.
Provided with a “hold” function for convenient measurement.
Analog output: Jack connections (4 mm).
Size, instrument: 119 x 64 x 26 mm.
Photodetector: 125 x 66 x 36 mm.
1888.20 Lux meter YF 1065
1888.20
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