*
*
*
*
*
#203-2 Bell in Vacuum, Glass Dome.
As the air is pumped through the jar the sound of the bell becomes
faint and finally inaudible. Includes a 1/2 gallon glass bell jar,
electric bell, binding posts and instructions.
COLOR FILTERS
#1404-9 Color Filters, Gelatin, Pack of 5
#1404-12 Color Filters, Acrylic, Pack of 5
#325 Diffraction Grating.
Three gratings mounted between glass plates in a card, 9 x16mm.
Gratings are 100, 300, 600 lines per millimeter.
#905-1 Kundt's Apparatus.
This unit is used to measure the ratio of the velocity of sound in
brass to that of air. A brass rod is rubbed with a bow which causes
the rod to vibrate. Sound waves inside the tube cause lycopodium
powder to accumulate at nodal points. By measuring the spacing between
the nodal points and comparing this value with the length of the brass
rod, the ratio between the speed of sound in brass is obtained. Instructions
provided.
LENSES
Double Convex, Unmounted w/ground edges
#909-1 Lenses. . .38mm d. x 5cm. F.L., Double Convex
#909-2 Lenses. . .38mm d. x 10cm. F.L., Double Convex
#909-3 Lenses. . .38mm d. x 15cm. F.L., Double Convex
#909-4 Lenses. . .38mm d. x 20cm. F.L., Double Convex
#909-5 Lenses. . .38mm d. x 30cm. F.L., Double Convex
#909-23 Lenses. . .50mm d. x 5cm. F.L., Double Convex
#909-24 Lenses. . .50mm d. x 10cm. F.L., Double Convex
#909-25 Lenses. . .50mm d. x 15cm. F.L., Double Convex
#909-26 Lenses. . .50mm d. x 20cm. F.L., Double Convex
#909-35 Lenses. . .50mm d. x 25cm. F.L., Double Convex
#909-6 Lenses. . .75mm d. x 17.5cm. F.L., Double Convex
#909-7 Lenses. . .100mm d. x 20cm. F.L., Double Convex
#909-17 Lenses. . .100mm d. x 50cm. F.L., Double Convex
Double Concave, Unmounted w/ground edges
#909-8 Lenses. . .38mm d. x 10cm. F.L., Double Concave
#909-9 Lenses. . .38mm d. x 15cm. F.L., Double Concave
#909-10 Lenses. . .38mm d. x 20cm. F.L., Double Concave
#909-11 Lenses. . .50mm d. x 20cm. F.L., Double Concave
#909-21 Lenses. . .50mm d. x 10cm. F.L., Double Concave
#909-22 Lenses. . .50mm d. x 15cm. F.L., Double Concave
#909-12 Lenses. . .75mm d. x 20cm. F.L., Double Concave
LENS SETS
#909-13 Lens Set, 38 mm d., 6/Set
#909-14 Lens Set, 50 mm d., 6/Set
Both the 909-13 and 909-14 consist of one each of the following:
double-convex, plano-convex, doule-concave, plano-concave, concavo-convex,
convexo-concave.
#909-20 Lens Set, Neutralization
#909-36 Lens Set, 38 mm d., Pkg./2 one Convex Lens 5cm FL and one Concave Lens 10cm FL
LENS & PRISMS ACRYLIC
#909-60 Lens & Prism Set, Acrylic 4 pcs.
The set contains one double convex lens, one single conves lens, onte
trapezoid prism, one double cocave lens.
#909-81 Lens & Prism Set, Acrylic 7 pcs.
Contains prisms and lens for a wide variety of experiments.
#909-82 Lens & Prism Set, Glass 7 pcs.
Contains prisms and lens for a wide variety of experiments.
#909-61 Prism, Trapezoid, Acrylic 5.2 x 7.5cm x .2mm
#909-62 Lens, Double Convex, Acrylic 89 x 25 x 15mm
#909-63 Lens, Double Concave, Acrylic 87 x 18 x 15mm
LENS, FRESNEL
#909-68 Lens, Fresnel - Pocket lens with holder
#909-66 Lens, Fresnel - with 25 Frames
MAGNIFIERS
Magnifiers, Plastic Frame and Handle, Black
#1009 Magnifier, Plastic Frame and Handle, Black, Diameter 2", 3X
#1010 Magnifier, Plastic Frame and Handle, Black, Diameter 2.5", 2X
#1011 Magnifier, Plastic Frame and Handle, Black, Diameter 3", 1.5X
#1016 Magnifier, Plastic Frame and Handle, Black, Diameter 4", 1.5X
Magnifiers, Chrome Rim & Plastic Black
Handle
#1012 Magnifier, Chrome Rim and Plastic Black Handle, Diameter 2",
3X
#1013 Magnifier, Chrome Rim and Plastic Black Handle, Diameter 2.5",
2X
#1015 Magnifier, Chrome Rim and Plastic Black Handle, Diameter 4",
1.5X
MIRRORS
Metal Spherical
#1301-A Mirror, Concave-Convex, Metal construction 3" diameter, -Focal
Length 21".
Metal Cylindrical
#1301-G Concave/Convex, 55mm R x 25.4mm FL
Metal Square
#1301-B Mirror, Metal, 3-3/8" x 4" Square, mirrored on both sides.
Glass; Silver Backed, with ground edges.
#1301-5 Mirror, 1" x 3"
#1301-6 Mirror, 2" x 3"
#1301-D Mirror, 2" x 6"
#1301-E Mirror, 4" x 4"
#1301-F Mirror, 4" x 6"
Glass Spherical, Concave; Silver Backed
#1301-I Mirror, Concave, 5cm D x 5cm FL
#1301-J Mirror, Concave, 7.5cm D x 7cm FL
#1301-P Mirror, Concave, 37mm D x 25cm FL
#1301-R Mirror, Concave, 37mm D x 50cm FL Glass, Spherical, Convex;
Silver Backed
#1301-K Mirror, Convex, 5cmD x 5cm FL
#1301-L Mirror, Convex, 7.5cm D x 7.5cm FL
#1301-Q Mirror, Convex, 37mm D x 25cm FL
#1301-S Mirror, Convex, 37mm D x 50cm FL Glass, Concave/Convex; Silver
Backed
#1301-N Mirror, 7.5cm D x 25cm FL
#1301-T Mirror, 7.5cm D x 25mm FL Plexiglas; Silver Backed
#1301-M Mirrors, Plain: 2-1/2" x 3-1/2"
Mirror, Demonstration
#1301-3 Mirrors, Large, Convex, Spherical; 40.5cm diam. X 37cm
FL
#1301-4 Mirrors, Large, Concave, Parabolic; 40.5cm diam. X 68cm FL
Mirror Support
#1301-C Mirror Support, Made from spring steel. Used to hold
mirrors from 10-15mm wide in an upright position.
#1475 Newton's Ring Apparatus.
For demonstrating interference of light. A pair of double convex
lenses 3.8cm in diameter, mounted in a plastic frame with three knurl screws
which also act as supporting legs.
OPTICAL BENCHES
#1404-20 Compact Optical Bench.
This unique optical bench is completely self contained and extremely
compact! The anodized aluminum channel opens up to form a long two
meter bench, allowing testing of longer than usual focal length lenses.
This bench can also be used as two individual one meter optical benches.
The exclusive design of the lens holders allows instant changing of lenses
and accessories without fussing with clips or screws and the holders slide
smoothly along grooves molded within the case. Everything except
the light source folds up quickly into a package of slightly over 1/2 inch
thick and can be set up in under one minute! Comes complete with
two aluminum benches, six different 38mm lenses, two optical screens, two
object markers, four lens holders, one mini flashlight with clips and one
mini candle which are your light sources. Instructions are provided.
#1404 Optical Bench, Student Demonstration.
Includes; one 100cm meter stick, two meter supports, two object marker
and screen supports, one screen, one 38mm lens support and instruction
sheet.
#1404-1 Optical Bench, Meter Supports
#1404-2 Optical Bench, Object Marker/Screen Support
#1404-3 Optical Bench, Candle Holder for a Single Candle
#1404-4 Optical Bench Part, Candle Holder will hold 4 Candles
#1404-5 Optical Bench Part, Object Screen
#1404-7 Optical Bench, Lens Support, will hold a 38mm Lens or Mirror
#1404-13 Optical Bench Lens Support, for a 75mm lens or mirror
#1404-8 Optical Bench, Light Source.
Consists of a molded receptacle with two outlets. A clip for
holding an object screen and a metal support for attachment to a meter
stick, connecting cord, and keyless socket with 7.5 watt, 115v lamp are
provided.
#1114 Ray Box, Light Source.
This 12-volt light source is perfect for low cost optical experiments.
Made of sturdy cast metal, this unit has built in grooves for various filters
and lenses. Connections are via banana plugs and the side walls are
ribbed for cooling. Comes complete with bulb and metal plate with
single and triple slits.
#1404-10 Optical Bench Screen with Scale, Pack of 5
#1404-11 Mini Light Source for use with an Optical Bench
#1404-18 Candle 17/32 Diam. X 5" length
PRISMS
#909-60 Prism & Lens Set 4 pcs, Acrylic.
Consists of one each: Lens double convex 7 cm x 3 cm x 5 cm FL,
Lens double convex 7 cm x 1.5 cm x 10 cm FL, Lens double concave 7 cm x
1.2 cm x 5 cm FL, Trapezoid prism 5.2 cm x 7.5 cm.
#909-81 Prism & Lens Set 7 pcs, Acrylic
Contains prisms and lens for a wide variety of experiments.
#909-82 Prism & Lens Set 7 pcs, Glass
Contains prisms and lens for a wide variety of experiments.
#909-61 Acrylic, Trapezoid, 5.2 x 7.5 x .2mm Thick
#909-64 Acrylic, Equilateral, 75mm x 25mm
#909-68A Acrylic, Equilateral, 25mm x 25mm
#909-74 Acrylic, Equilateral, 25mm x 50mm
#909-75 Acrylic, Equilateral, 25mm x 75mm
#909-69 Acrylic, Right Angle, 45mm
#909-76 Acrylic, Right Angle, 25mm x 50mm
#909-84 Glass, Equilateral, 25mm x 25mm
#909-70 Glass, Equilateral, 25mm x 50mm
#909-71 Glass, Equilateral, 25mm x 75mm
#909-72 Glass, Equilateral, 25mm x 100mm
#909-77 Glass, Equilateral, 25mm x 150mm
#909-73 Glass, Right Angle, 32mm x 50mm
#909-85 Glass, Right Angle, 32mm x 32mm
#909-78 Refraction Plate, Glass, 70 x 70 x 9mm
#909-79 Refraction Prism, Equilateral, Glass, 75 x 9mm
#1113 Radiometer.
The wings in the radiometer are alternately dark and light. When
the light strikes the wings, it transfers heat to each one, but not at
the same degree. The light wings reflect the ray and the dark wings
absorb the rays. As the light gets brighter it creates more heat
and spins the wings faster.
#1806 Resonance Tube Apparatus, Vertical.
Used to measure the velocity of sound in air. The resonance tube
consists of a water reservoir, and glass resonance tube marked in increments
of 1mm, a support stand and two clamps to hold the tube in position.
Instructions provided.
#1807 Resonance Tube Apparatus, Horizontal.
A graduated glass tube is mounted on a pair of wooden bases.
A brass rod and piston moving inside the tube can vary the resonant length
from 30cm to 98cm. The tube is 4cm dia. x 100cm long so that resonant
points for a 512 vps tuning fork may be obtained for 1/4 x 3/4 and 5/4
wavelengths. Instructions included.
TUNING FORKS
#20-01 Aluminum Tuning Forks, Physical Pitch Frequency C-256, Length:
8-1/8"
#20-02 Aluminum Tuning Forks, Physical Pitch Frequency D-288, Length:
7-3/4"
#20-03 Aluminum Tuning Forks, Physical Pitch Frequency E-320, Length:
7-1/2"
#20-04 Aluminum Tuning Forks, Physical Pitch Frequency F-341.3, Length:
7-3/8"
#20-05 Aluminum Tuning Forks, Physical Pitch Frequency G-384, Length:
7"
#20-06 Aluminum Tuning Forks, Physical Pitch Frequency A-426.7, Length:
6-3/4"
#20-07 Aluminum Tuning Forks, Physical Pitch Frequency B-480, Length:
6-1/2"
#20-08 Aluminum Tuning Forks, Physical Pitch Frequency C-512, Length:
6-1/8"
#20-09 Aluminum Tuning Forks, Physical Pitch Frequency C-1024, Length:
5-1/8"
#20-10 Aluminum Tuning Forks, Physical Pitch Frequency C-2048, Length:
4-1/4"
#20-11 Aluminum Tuning Forks, Physical Pitch Frequency C-4096, Length:
3-1/2"
#20-12 Aluminum Tuning Forks, Physical Pitch Frequency C-261.6, Length:
8-1/8"
#20-13 Aluminum Tuning Forks, Physical Pitch Frequency D-293.7, Length:
7-3/4"
#20-14 Aluminum Tuning Forks, Physical Pitch Frequency E-329.6, Length:
7-1/2"
#20-15 Aluminum Tuning Forks, Physical Pitch Frequency F-349.2, Length:
7-3/8"
#20-16 Aluminum Tuning Forks, Physical Pitch Frequency G-392, Length:
7"
#20-17 Aluminum Tuning Forks, Physical Pitch Frequency A-440, Length:
6-3/4"
#20-18 Aluminum Tuning Forks, Physical Pitch Frequency B-493.9, Length:
6-1/2"
#20-19 Aluminum Tuning Forks, Physical Pitch Frequency C-523.3, Length:
6-1/8"
TUNING FORK MALLETS
#20-28 Tuning Fork Mallet, 1" diameter