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Optical Sound wave
RESONANCE TUBES
Comprising two glass tubes, one 300x32mm & the other 300x25mm. The smaller tube slides inside the wider tube in foam plastic collars, allowing the air column length to be varied from 300 to 530mm.
Basic Spectrometer
Basic Spectrometer Great for high school laboratories - a perfect device for any intermediate-level classroom! Built from sturdy metal, this unit includes an adjustable collimator tube, telescope, and prism stand. It provides a high quality optical system and an easy to read etched scale, which allows the student to measure spectrum lines with a resolution of 50A. Light is directed in the collimator tube and focused to the adjustable telescope, which has a scale inside to allow special lines to be reliably measured. Includes a 600-line millimeter diffraction grating, grating holder, 3x2.5cm equilateral glass prism, prism hood, which helps block stray light from entering the spectrometer.
BINOCULARS
Zoom 8X - 21X magnification.
Field of view: 150 meters / 1000 meters.
Offer light weight, portable, wide field of view for great observation.
Field of view: 150 meters / 1000 meters.
Offer light weight, portable, wide field of view for great observation.
BINOCULARS
Zoom 20X - 25X magnification.
Field of view: 5 meters / 5000 meters.
Offer light weight, portable, wide field of view for great
observation.
BINOCULARS
Roof prism binoculars, 7X35mm
Size: 150 x 175 x 55mm
Size: 150 x 175 x 55mm
Diffraction Grating
Compare diffraction patterns of different gratings! Depicts the properties of light waves, perfect for experiments. Three 9x16mm gratings mounted between glass plates in a card. Gratings are 100, 300, and 600 lines per millimeter.
(3-1.2" x 1-1/4" x 1/8"; .01Ib)
Basic Spectroscope
Durable construction with compound prisms and converging lenses made of high quality optical glass.
BINOCULARS
Zoom 8X - 21X magnification.
Field of view: 128 meters / 1000 meters.
Offer light weight, portable, wide field of view for great
observation.
Fancy bug viewer
Crystal-clear plastic containers include a magnifying lid with air holes and a sizing grid, and fancy designed. This magnifying viewer for examining bugs, etc.
Intermediate Spectrometer, Model JJY-1'
Advanced Spectrometer Designed for easy set-up and use. This spectrometer's sturdy iron base incorporates a 20cm-diameter spanided table with highly visible etched graduations and a vernier scale that can be read to a resolution of 1 minute of arc. The revolving 7cm-diameter prism support rotates 360 degrees and has a height adjustment of 2cm, thereby accommodating a wide range of test conditions. A built-in illuminated auto collimator eliminates the difficulty of telescope-collimator alignment. Accessories include an illuminated magnifier, glass diffraction grating and holder, auto collimation mirror, power adapter, brush, screwdrivers, extra bulbs, and instruction manual.
Motion Combination & Resolution Demonstrator
This unit demonstrate synthesis of uniform linear motion with angle to each other, it includes two function, one is as motion synthesis demonstrator and other is as motion resolution demonstrator.
Reflection & Refraction Tank
This unit is used to demonstrate the reflection and refraction of light. Includes:
1-Black Acrylic Tank, 1-12V lamp, 1-360 scale. A 12 volt power source is required but not included.
Ripple Tank
This device demonstrates the generation, propagation, reflection, interference and diffraction of waves. Comes with all accessories necessary for these experiments. Requires 6V DC power and an overhead projector (not included).
Simple Optical Bench Set
Suitable for basic experimentation on the properties of lenses and mirrors. Set includes two metal supports for meter stick, a lens support for 3.75 cm lenses, a screen and a screen support, and an object and marker. Meter stick and other accessories sold separately.
Aluminum Tuning Forks
These satin finish non-tarnishing tuning forks are of one piece construction milled from heavy 3/8"x 1"tempered aluminum alloy with a 5/16"round stem turned to a 1-3/4"length. The tuning accuracy is within +1/20%. Aluminum Tuning Forks in both physical and concert pitch can be supplied mounted on a tuned resonator box. Set consists of resonator box, threaded stem fork, mounting hardware and 1"rubber mallet.
BINOCULARS
Roof prism binocular, 7X50mm
Size: 180 x 190 x 50mm
Size: 180 x 190 x 50mm
BINOCULARS
Roof prism binocular, 10 - 50X70mm
Size: 250 x 190 x 70mm
Size: 250 x 190 x 70mm
Bug Viewer
Rugged, clear plastic viewer with 5mm squares on the bottom for easier specimen measurement. The top has a 2.5X glass lens.
Bug viewer
75mm x 5X glass lens
Professional grade glass optics allow you to see the finest details. Pre-focused for quick, easy viewing.
Professional grade glass optics allow you to see the finest details. Pre-focused for quick, easy viewing.
DAL PURPOSE RIPPLE TANK
| It is used as a demonstration model with an Overhead Projector. Comprises a steel frame with an acrylic window. The frame is shared to form beaches on all sides to minimize unwanted reflections & fits neatly onto an overhead projector. The undersides of the frame has threaded metal inserts to take the four legs provided enabling the tank to be used as a free standing beach model, if required. Facilities are provided for mounting the ripple tank illuminant for this purpose. A gantry is supplied for supporting a motor beam, the height of which is easily adjustable allowing it to be positioned for maximum effect. Ripples are produced by a small 1.5 to 4.5V DC motor mounted on the plastic beam of 240mm length. A standard cam is fitted to the motor spindle to give an oscillatory motion & row of nine holes in the beam are for mounting the spherical dippers for production of circular ripples. |
ELECTRICAL TUNING FORK
Fancy bug viewer
Allows students to view an object from two different angles, top and bottom, through magnifying lenses. Small objects such as insects and plants can be placed in the slide tray. Two students can view the object at the same time.
Folding Pocket Magnifier
plastic housing, retrievable, round
YJ7040B 27mm 1-10X
YJ7040 27mm 2-5X
YJ7003 30mm 3-5X
YJ7040B 27mm 1-10X
YJ7040 27mm 2-5X
YJ7003 30mm 3-5X
Glass
Glass Spherical, Concave Mirror; Silver Backed, Ground Edge
1301-I 5cmD x 5cm FL
1301-J 7.5cmD x 7cm FL
1301-P 37mmD x 25mm FL
1301-R 37mmD x 50mm FL
Glass Spherical, Convex; Silver Backed, Ground Edge
1301-K 5cmD x 5cm FL
1301-L 7.5cmD x 7.5cm FL
1301-Q 37mmD x 25mm FL
1301-S 37mmD x 50mm FL
Glass, Concave/Convex; Silver Backed, Ground Edge
1301-N 7.5 cm D x 25 cm FL
1301-T 7.5 cm D x 25mm FL
1301-I 5cmD x 5cm FL
1301-J 7.5cmD x 7cm FL
1301-P 37mmD x 25mm FL
1301-R 37mmD x 50mm FL
Glass Spherical, Convex; Silver Backed, Ground Edge
1301-K 5cmD x 5cm FL
1301-L 7.5cmD x 7.5cm FL
1301-Q 37mmD x 25mm FL
1301-S 37mmD x 50mm FL
Glass, Concave/Convex; Silver Backed, Ground Edge
1301-N 7.5 cm D x 25 cm FL
1301-T 7.5 cm D x 25mm FL
Glass Lenses, Double Convex, w/ground edges
Item No |
Diameter | Focal Length |
| 909-1 | 38mm | 5cm |
| 909-2 | 38mm | 10cm |
| 909-3 | 38mm | 15cm |
| 909-4 | 38mm | 20cm |
| 909-5 | 38mm | 30cm |
| 909-23 | 50mm |
5cm |
| 909-24 | 50mm | 10cm |
| 909-25 | 50mm | 15cm |
| 909-26 | 50mm | 20cm |
| 909-35 | 50mm | 25cm |
| 909-6 | 75mm | 17.5cm |
| 909-7 | 100mm | 20cm |
| 909-17 | 100mm | 50cm |
| 909-18 | 125mm | 35cm |
Gooseneck Magnifier, desk style with flexible hose
90mm x 5X
Magnifiers feature lenses mounted in a chrome rim. Magnifier attaches to a flexible gooseneck cable which is attached to a black cast-iron base. 4" focal distance. 4" lens.
Magnifiers feature lenses mounted in a chrome rim. Magnifier attaches to a flexible gooseneck cable which is attached to a black cast-iron base. 4" focal distance. 4" lens.
HAMMER
HAMMER Made of wood.
HAND STROBOSCOPE
HAND STROBOSCOPE A slotted hardboard disc, with finger hole, is pivoted on a bearing mounted which also acts as a convenient handle. The disc has twelve radial slots 50x3mm extending to its edge. Diameter of the disc is 250mm.
KUNDT?S TUBE APPARATUS
Consists of a glass tube heavy walled 1350x32mm with cork bung, short & long ebonite rod, cork pistons, mounted on a polished wooden board 1520x125x22mm with spring clamps. The long ebonite piston is supported by wood clamp secured with wing nuts.
Longitudinal Wave Demonstrator
This unit is designed to demonstrate propagation, reflection, interference, and a number of other resonant models of longitudinal waves.
Magnifier with Light, desk style, level/angle adjustable
lens diameter 127mm
magnification 3X, 5X, 8X, 10X
power 110V/220V/50HZ
magnification 3X, 5X, 8X, 10X
power 110V/220V/50HZ
Magnifier, Foldable black, 2 in 1
YJ7128F-75 20mm x 6X, 75mm x 2.5X
YJ7128F-100 20mm x 8X, 100mm x 2.5X
YJ7128F-100 20mm x 8X, 100mm x 2.5X
Magnifier, Plastic frame and handle, black, rectangle
An ideal student magnifier for studying insects, shells, plant parts, rocks, minerals, and other small specimens. One piece handle and frame is molded of sturdy black plastic. Offset handle permits unobstructed use. Designed for laboratory or field trips.
2.5X 50 mm x 100 mm (2" x 4") glass lens.
2.5X 50 mm x 100 mm (2" x 4") glass lens.
Magnifier, Plastic Frame and Square Section Handle
High-quality glass lenses with durable plastic frames and handles. Dia. 110mm, Magnifying: 3X
MELDE?S APPARATUS
To demonstrate stationary waves by means of stretched strings. Consists of an electrically maintained tuning fork, bench clamp pulley, scale pan, & meter scale.
Mini bug viewer
19mm x 12X glass lens
Professional grade glass optics allow you to see the finest details. Pre-focused for quick, easy viewing.
Professional grade glass optics allow you to see the finest details. Pre-focused for quick, easy viewing.
Newton's Color Disc
For demonstrating that white light is composed of the seven colors of the spectrum by rotating a disc with the seven colors. The seven-colored metal disc is attached to a pulley mounted on a metal stand driven by a belt with the help of a hand driven wheel.
ORGAN PIPE
ORGAN PIPE Varnished wood with glass front & membrane suspended on cord for loading with sands to show positions of nodes & anti nodes. Overall length 760mm.
ORGAN PIPE OPEN
Open ended, square section, with tapered mouthpiece. The pipe is of polished wood & has an air column length of 405mm approx., which gives a note approximating to A426.
ORGAN PIPE SLIDING
With graduated sliding piston. The organ pipe is of a square section, of polished wood & fitted with a tapered mouthpiece. The slider is also square in section 32x32mm, of wood & with a knob at the end for easy control.
POWER SUPPLY UNIT
For use with the ripple tank. It has continuously variable DC output so that the speed of the motor & the frequency of the ripples may be varied.
RESONANCE APPARATUS
| Consists of a resonance tube brass N.P. 100cms, reservoir brass N.P. 250ml & meter scale both sides millimeters, which are mounted on wooden polished board. The reservoir is caged in wooden block that has sliding & clamping arrangement on the board. The board is mounted vertically on heavy metal base with synthetic hammer finish with levelling screws. Complete with rubber tubing. |
RESONANCE APPARATUS GLASS
A glass tube 340x25mm mounted on retort stand with clamp & boss head, with 500ml glass bulb, connecting tubing & spring clip supported on rubber covered split iron ring.
RESONANCE APPARATUS SIMPLE FORM
For measuring the resonant length of an air column driven by a tuning fork. Comprises a brass tube 290x25mm dia., fixed to a base 150x150x20mm with a sliding inner tube 300mm long, which allows the length of the air column to be varied from 350 to 530mm.
RESONANCE BOX FOR TUNING FORKS
For demonstration of the formation of a basic major chord. Made from good quality wood.
RIPPLE TANK
| The instrument is a device to illustrate the laws of wave phenomenon-using ripples on the surface of water as the prototypes of all transverse waves. Ripple tank illustrates important wave motions like rectilinear and circular. It can also demonstrate refraction, diffraction and interference of water waves. Tank is supported by four legs having leveling screws. Size of the tank is 595x510x70mm supplied complete with rippler assembly, two straight obstacles 130mm long, one straight obstacle 40mm long, curved reflector 200mm radius, transparent refraction plate, wooden wave roller, one pack of rubber bands, water dropper, sponge, illuminator, hand stroboscope and suitable power supply. It is supplied with instruction manual. |
Round Glass Magnifier,
Plastic frame and handle, black
YJ7005B-P2 2" (51mm) x 5X
YJ7007B-P2 2.5" (63mm) x 5X
YJ7009B 3" (76mm) x 5X
YJ7013D 4" (100mm) x 3X
YJ7007B-P2 2.5" (63mm) x 5X
YJ7009B 3" (76mm) x 5X
YJ7013D 4" (100mm) x 3X
Round Glass Magnifier, Chrome rim, black handle
1012 2" x 3X
1013 2.5" x 2X
1014 3" x 1.5X
1015 4" x 1.5X
1013 2.5" x 2X
1014 3" x 1.5X
1015 4" x 1.5X
Round Glass Magnifier, Plastic frame and handle, black
1009 2" (50mm) x 3X
1010 2.5" (63mm) x 2X
1011 3" (75mm) x 1.5X
1016 4" (100mm) x 1.5X
1010 2.5" (63mm) x 2X
1011 3" (75mm) x 1.5X
1016 4" (100mm) x 1.5X
Simple Harmonic Oscillation Projection Demonstrator
This unit can draw oscillation image from oscillation object directly, and the image can be reflected at the screen by projector so that the students in classroom can observe at same time. It has the features of easy operation, vivid image and excellent teaching results.
