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LENS HOLDER WOODEN (LSE)
To take lenses & mirrors of upto 75mm diameter. Comprises a wooden upright 100mm high, with a V shaped slot to hold convex or concave lenses or mirrors mounted on a rectangular wooden base.
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LENS HOLDER (LSE)
Comprising a metal holder with sides grooved to hold the lens or mirror. The holder is finished in matt black & is free standing for bench use, to hold lens 50mm in diameter.
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GLASS BLOCK RECTANGULAR (LSE)
Slightly greenish tint from sheet glass, all sides polished.
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GLASS BLOCK RECTANGULAR (LSE)
Made from Indian glass with polished surfaces.
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GLASS BLOCK SEMICIRCULAR (LSE)
GLASS BLOCK SEMICIRCULAR All faces nicely polished.
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PERSPEX BLOCK SEMICIRCULAR (LSE)
Of clear Perspex, all faces nicely polished.
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PRISM GLASS EQUILATERAL (LSE)
60?x60?x60?, made from moulded glass.
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PRISM GLASS RIGHT ANGLE (LSE)
90?x45?x45?, made from moulded glass.
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PRISM PERSPEX EQUILATERAL (LSE)
60?x60?x60?, clear Perspex polished surfaces.
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SPECTROMETER PRISMS (LSE)
Prisms optically worked for Spectrometer work equilateral two faces polished, size 25x25mm.
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HOLLOW GLASS PRISM (LSE)
Made from ordinary glass plates, properly cemented with optical cement.
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SET OF ACRYLIC PLASTIC BLOCKS (LSE)
SET OF ACRYLIC PLASTIC BLOCKS Clear acrylic plastic blocks 20mm thick; all sides & surfaces fully polished. The set comprises 7 blocks as follows: Rectangle 75x50mm, Triangle 90?x45?x45?; 75mm hypotenuse, Triangle 60?x60?x60?; 57mm side, Semicircle 75mm diameter, Bi-Convex 75mm long (curved faces radius 115mm), Bi-Convex 75mm long (curved faces radius 145mm), Bi-Concave 75mm long (curved faces radius 115mm)
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OPTICAL DISC MAGNETIC (LSE)
| 500mm diameter, steel disc is faced with matt white, marked every 5º, with extended lines every 10º & 30º; cross lines mark the centre. The disc is mounted on a 25mm diameter steel tube 390mm long, which fits into a stable base with leveling feet. The disc rotates about its centre & can be locked in any desired position. The lamp house holds a 12V, 24W axial filament lamp. This lamp house is covered by a rotatable outer shield that has various slots. By rotating the shield, light beams of varying width as well as narrow single, double & triple beams can be provided. Attached to the lamp house is an adjustable lens carrier with lens to provide diverging, parallel or converging light beams. The lamp house is mounted on a rotatable arm that can be locked in any position. A sliding weight on the arm acts as a counterpoise. All optical elements are supplied with magnets attached so that they can be attached at any place on the disc. The disc is supplied complete with accessories. |
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REFRACTIVE INDEX OF A LIQUID BY CRITICAL ANGLE METHOD (LSE)
| The apparatus consists of a metal bridge 130x90x80mm, fitted with anti-slip rubber edging strips. The air cell holder is attached to a large knob & scale. Graduated from 0? to 360?. The air cell takes the form of two flat glass plates, 50x50mm; arranged parallel & at a small distance apart in a sealed masking frame. Liquid under investigation is contained in a transparent -Perspex tank. Supplied with tank.
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RAY OPTICS BOX (LSE)
| Black finish metal box, with 12V 24W straight filament lamp. The lamp holder, with 1m of twin flex, is mounted in sliding metal bridge piece which provides sufficient adjustment to covering, parallel or diverging rays. The enamelled steel body has slots to support a cylindrical lens & a triple slit screen. Extra slots are provided for filters. Dimensions 182x61x115mm approx. The box is supplied complete with lamp & triple slit but without lenses or filters.
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