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Lens, Biconvex, Acrylic
Lens, Double Convex, Spherical
Description
Clear glass, ground edges
| Focal length | Power | Add To Enquiry |
|---|---|---|
| 25 mm | 100 mm | +10D |
| 25 mm | 150 mm | +6.6D |
| 38 mm | 50 mm | +20D |
| 38 mm | 100 mm | +10D |
| 38 mm | 150 mm | +6.6D |
| 38 mm | 200 mm | +5D |
| 38 mm | 250 mm | +4D |
| 38 mm | 300 mm | +3.3D |
| 38 mm | 500 mm | +2D |
| 38 mm | 1000 mm | +1D |
| 50 mm | 50 mm | +20D |
| 50 mm | 100 mm | +10D |
| 50 mm | 150 mm | +6.6D |
| 50 mm | 200 mm | +5D |
| 50 mm | 250 mm | +4D |
| 50 mm | 300 mm | +3.3D |
| 50 mm | 500 mm | +2D |
| 50 mm | 1000 mm | +1D |
| 60 mm | 100 mm | +10D |
| 60 mm | 200 mm | +5D |
| 60 mm | 300 mm | +3.3D |
Lenses, Set of Six
Light Box and Optical Set
Description
A Robust light box in matt black finish with a 12 V 24 W axial filament lamp with flexible leads. One end of the box takes a cylindrical convex lens in an adjustable sliding mount to enable production of convergent, parallel or divergent beams. Complete with accessories which consist of: 5 Plastic blocks, one rectangular, One semicircular, One equilateral prism 60° x 60° x 60°, One right angle prism 90° x 60° x 30° and one right angle prism 90° x 45° x 45°. 3 Cylindrical acrylic lenses: one double convex, one double concave, both having the same radius of curvature and one thick convex lens. 3 Mirrors, one plane glass, one curved parabolic and one curved semi-circular. 2 Slit plates, one with three narrow and one narrow slits, the other with four narrow and one wide slits 1 Set of eight colour filters, Red, Green, Blue, Cyan, Violet, Yellow, Orange and Magenta. 1 Set of coloured cards, Red, Green, Blue, Violet, Orange, Cyan, Yellow and Pink. Complete with one spare lamp, in box.
Light Kit
Description
Simple kit that helps explain students the principle of reflection and refraction. Using mirrors, lenses, acrylic prism set and a ray box, light can be reflected and refracted in different ways. The acrylic prism set includes a triangular, half-round, double convex and rectangular prism and two double concave prisms all packed in a wooden storage box. A Newton color disc is also provided with this set. The color disc illustrates an important property of light that white light is composed of seven colors. With instructions.
Light Reflection and Refraction Set
Description
This optical kit helps students easily study these two important wave properties: Reflection and Refraction. Set made up of a wooden and rotating platform. base triangular stand made up of a disc and a rotating arm. The rotating platform provides a high degree of accuracy when making measurements as well as provides an easy way to change angles without disturbing the light source.
Linen Tester
Description
These are collapsible pocket magnifiers. The optical system is a single element, glass Double Convex Lens. The housing is made of machined, black high grade plastic for a high finish look. These magnifiers fold flat to fit in your pocket. Scales are etched on the inner faces of the viewerÂ’s base.
Lux Meter
Magnifier, Folding
Magnifier, Folding
Magnifier, Reading Glass
Malu’s Law
Description
Students can investigate the relationship between the intensity of transmitted light and the angle of rotation of two polarizing filters. A graduated cartridge containing two polarizing filters allows students to observe the change in intensity as they are rotated relative to one another. The analyzer allows quantitative readings to be taken using a voltmeter at five degree intervals as the polarizing filters are rotated from minimum to maximum transmission. The output from the analyzer changes linearly with light intensity and so the resulting data can be used to verify Malus Law. Includes instructions.
Matt White Screen
Mirror, Plane
Mirror, with Base
Model of Astronomical Telescope
Model of Compound Microscope (BI STU)
Model of Galilean Telescope
Model of Terrestrial Telescope
Model Telescope
Newton’s Color Disc
Description
To demonstrate the discovery made by Newton that white light is composed of seven colors. Consisting of a pulley mounted on a metal stand, the seven colored disc is driven by gears connected to a hand driven wheel. When the colored disc rotates, the eye can’t distinguish between individual colors and perceive it as white color.
Newton’s Colour Disc, Motor Driven
Newton’s Rings Apparatus
Optical Bench, Aluminium
Description
Bench has two steel rods, one of which is graduated in mm with heavy metal and supports with leveling screws with four metal slides which slide smoothly on the bench. Two of the slides have transverse motion arrangement. Complete with two lens holders and two object needles. Graduated to 1 m Graduated to 1.5 m
Optical Bench, Junior
Description
On wooden base, with 1.5 meter scale, with six sliding bases. Each siding base is with an index mark, a brass pillar and locking screw, with following accessories: 1. One lamp house with 230 V lamp. 2. One object screen, metal, white. 3. One lens holder for 38 mm diameter Lenses. 4. One receiving screen, metal, white, with slot for squared paper on reverse. 5. One object needle, mounted in brass rod. 6. One plane mirror in metal frame. Each of these accessories is mounted on a 6 mm brass rod which fits into the pillars and is adjustable for height.
Optical Bench, wooden
Description
A wooden base board with one meter scale divided into mm with following accessories: One each White face object and receiving screens each 150 x 100 mm with aperture mounted on wooden base with an index mark. Two plane mirrors 150 x 100 mm mounted as above. One lens holder V shaped, wooden. One needle vertically mounted in a short wooden rod on base. One candle holder on base. The components have the same optical center height.
Optical Disc
Description
A 500 mm diameter disc marked every 5° is mounted on a heavy stand and is rotatable around its centre. It can be held in any desired position. The lamp house, with a 12V 24 W special filament lamp has rotatable slots to provide light beams of varying widths and also narrow single, double and triple beams. Attached to the lamp house is an adjustable lens carrier with lens to provide diverging, parallel or converging light beams which are clearly visible in classroom. The lamp house can be held in any desired position around the disc. Optical elements are two 50 x 25 mm plane glass mirrors, and a metallic cylindrical mirror, each mounted in a holder, for reflection. For refraction, 20 mm thick acrylic semi-circular block, bi-convex lens, bi-concave lens each 140 mm long and a trapezium with 125 mm base are provided. Each of these elements has embedded magnets to hold on to the disc.
Optical Set For Ray Track Apparatus
Description
Comprises a white painted wooden board mounted on nonskid plastic feet, and a removable turntable about 170 mm in diameter. Two orthogonal lines along the turntable’s diameter divide it into four equal quadrants Just beyond the rim of the turntable, a circular scale graduated 90 – 0 – 90 – 0 – 90 °, with 1° subdivision, Also includes a ray box with a 12 V, 24 W bulb Supplied complete with a cylindrical convex lens with focal length approx. 75 mm and two double slits, giving one wide beam slit and one each of single, triple and five slits An optical set is available separately, comprising of one each of rectangular, semi-circular, right-angled triangular – 90 ° 45 ° 45° trapezoidal, biconvex and biconcave prisms.
Periscope, Wooden
Physical Optics Kit
Description
Consists of: 1. Eight Plano-convex lens fl 500 mm, 1 Plano convex lens of fl 150 mm. 2. Twelve lens holders. 3. Four plates of different apertures, 32, 22, 11 and 5.5 mm diameter resp. 4.Three plates with small holes in circles of 29, 22, 10 mm diameter 5. One plate with circular aperture of 5.5 mm diameter 6. Four multi-aperture plates. 7. Four stop plates. 8. Two slide holders. 9. Six translucent screens. 10. Ten white cards. 11. Four Eye-pieces. 12. Fifteen each Red, Green and Blue filters. 13. Forty Black cards with holes. 14. Forty razor blades. 15. 120 Rubber bands. 16. One piece black chiffon for diffraction effects
Pin Hole Camera
