Physics

Double convex. Optically worked glass with ground edges. Dimensions (Dia.): 50 mm.

Clear glass with polished faces and ground edges. Dimensions (H x W): 50 x 45mm.

Clear glass with polished faces and ground edges. Dimensions (H x W): 50 x 45mm.

Clear glass with polished faces and ground edges. Dimensions (H x W): 50 x 45mm.

Wood with 'V' slot to hold lenses up to 80 mm diameter.

These round, unmounted, optically worked glass mirrors are premium quality, incorporating vacuum coated silver reflective backing with protective coating, for superior finish. Dimensions (Dia.): 50 mm.

These round, unmounted, optically worked glass mirrors are premium quality, incorporating vacuum coated silver reflective backing with protective coating, for superior finish. Dimensions (Dia.): 50 mm.

Glass, unmounted. Silvered back with protective coating.

Flexible. Can be cut with scissors or sharp knife.

Flexible. Can be cut with scissors or sharp knife.

Semi-circular concave mirror. 150 x 75mm (L x H)

Semi-circular convex mirror. 150 x 75mm (L x H)

Plane glass mirror, mounted on wooden support block for convenience. Removes the need for separate support block to hold mirror perpendicular to work bench.

Plane glass mirror, mounted on wooden support block for convenience. Removes the need for separate support block to hold mirror perpendicular to work bench.

A pack of 43 mm cube wooden blocks with 4 x 15 mm slot for supporting plane mirrors during optical experiments on reflection.

These come mounted in 35 mm slide holder. O.1 mm spacing.

These come mounted in 35 mm slide holder. 0.5 mm spacing.

These come mounted in 35 mm slide holder. 1.0 mm spacing.

For fixing of optical equipment with max. 10 mm diameter fixing rod. Made of black-anodised Aluminium with thumb screw and measuring line. Suitable for use with the Premium Optical Bench OP66520, and Radioactivity Bench Kit RA95610. Dimensions (W H L): 35 50 84mm.

In laminated plastic with white surface with 10 mm fixing rod. Dimensions (H x W): 250 x 250 mm.

Made from black-anodised aluminium with mm scale. 1m long, cross section 26 x 82 mm. Supplied with adjustable levelling feet with rubber pads, sliding saddles with 10 mm bore fixings to accept accessories, sliding saddle for optical disc and 10 mm hole.

This compact Optical Bench with an LED light source offers excellent support and alignment of the optical elements. Ideal for use where space is at premium or as an economical alternative to full length optical bench, the light source is bright LED which does not get hot and should give thousands of hours use without replacement and, of course, electricity consumption is very low. The lenses and the objects (Ø50 mm) are held tight in the lens holder with ring which can be tightened to ensure precise positioning and prevent risk of damage. Contents include: 1-metre rail, graduated in mm, 1 LED light source on support, 4 sliders, 2 lens holders, 1 white screen, 1 F-letter, set of 3 diaphragms (Ø 3, 5 and 8 mm), 1 set of lenses (F -100, +50, +100, +250).

This full length Optical Bench is more comprehensive version of the 1 metre bench and includes powerful LED light source with adjustable condenser. The LED light source, which does not get hot, should give thousands of hours use without replacement and the electricity consumption is very low. The rail offers excellent support and alignment of the optical elements. The lenses and the objects (Ø 50 mm) are held tight in the lens holder with ring which can be tightened to ensure precise positioning and prevent risk of damage. Contents include: A 2-metre rail, graduated in mm, 1 LED light source with adjustable condenser and support, 8 sliders/lens holder + 4 lens holders, 1 prism + 1 prism holder, 1 white screen + 1 ground glass screen, 1 F-letter, set of 3 diaphragms (Ø3, 5 and 8 mm), 1 set of lenses (F -100, -50, +50, +100, +200, +500), 1 concave mirror + 1 convex mirror + 1 plane mirror.

An optical bench kit that fits in suitcase! The complete kit, including the bench itself, can be disassembled in seconds, and stored conveniently and safely in its stylish, robust suitcase. The bench features guide at the rear to ensure the riders are correctly aligned, and cm/mm scale on the front. It comes in three parts which clip together easily to form 1.1 m track. The riders can take either 10 mm diameter rod, or 2.5 mm thick sheet. They feature pointer so their position can be read from the scale on the bench. The lens/slide holders can accommodate either a 40 mm diameter optical device such as mirror or lens, or a 50 x 50 mm slide such as diffraction grating or colour filter. The white LED also fits in this holder. All parts of this kit are available separately. • 1.1 plastic bench in 3 parts • White LED with Power Supply • 5 riders (1 with knearled screw) • 4 lens/slide holders • 1 prism table • 5 circular apertures (1.5/3/6/10/20 mm) • 1 single slit • 1 triple slit • 1 figure of '1' • 6 plastic lenses (focal lengths -100/-200/+50/+100/+150/+250 mm) • 1 mirror (50x50 mm) • 1 white screen (100 150 mm) • Suitcase 320 x 430 x 115 mm • Weight 1.9 kg

Nickel plated steel, 51 mm long. In packs of 100.

A white acrylic screen mounted in wooden base, suitable for image projection in optics experiments. Dimensions (H x W): 190 x 120 mm.

This apparatus is designed to determine the approximate value of Planck's constant, using a range of LEDs of known wavelength, to allow the electron/photon energy to be calculated. There are LEDs, covering the light range from deep blue at 470 nm to near IR at 940 nm, mounted on box with 4 mm sockets for attachment to voltmeter and ammeter for voltage and current measurements. By monitoring the voltage at which each LED just begins to emit light, graph of energy input as function of light emitted frequency can be plotted and an approximate value of Planck's constant can be deduced. Requires a 9 DC power supply (standard lab power supply).

Antique style mains bulbs, useful for optics experiments as the low brightness filament makes useful object for projection of an image, determining focal length etc. They have the added bonus of being an attractive form of mains lighting! Voltage: 230 AC. Power rating: 60 W.

This pinhole camera class kit contains enough components to make 10 pinhole cameras. The kit includes 10 square section black plastic tubes, 200 x 60 x 60 mm each, pre-cut black card and translucent paper for mounting on either end of the tubes. A small pin-hole in the black card will then project an image onto the translucent paper at the opposite end of the tube. Requires a bright light source (e.g. carbon filament or antique lamp) or desk lamp with suitable object to project an image.

High quality polaroid filters, sandwiched between glass sheet for rigidity and ease of cleaning, and mounted in 35 mm slide holder frame.

The Polaroid stress analyser allows students to view stresses which exist in clear plastic materials. This simple apparatus consists of two crossed Polaroid filter squares (i.e. axes perpendicular to each other), 65 x 65 mm, on a plastic handle. A gap between the Polaroid squares allows clear plastic shapes (or even a clear ruler) to be placed between them, to view any stresses within the material the stresses show as coloured areas and lines within the plastic. The analyser comes with two cut-out shapes which can be compressed to alter the stress patterns. Additional shapes are also available separately (OP74725).

A set containing four additional pre-cut shapes and 200 x 200 mm sheet (for cutting your own shapes) for use with the OP74720 Polaroid Stress Analyser.

Unmounted Polaroid squares suitable for class work on polarised light. 50 x 50 mm.

Unmounted Polaroid squares suitable for class work on polarised light. 150 x 150 mm.

A simple, cost-effective polarimeter suitable for student use. A monochromatic light shines through a polariser at the base of the polarimeter and through a sample tube containing the solution for testing. A second polariser located in the eyepiece is then rotated and the angle of rotation/extinction measured on the integral scale. Requires a standard DC power supply to power the light source.

Hollow glass prism with 50 mm equilateral sides, useful for filling with specific liquids for refraction experiments, such as Ethyl cinnamate (ET2680).

Clear white glass. 60° 60° 60°.

Clear white glass. 60° 60° 60°.

Clear white glass. 90° 45° 45°.

A ventilated metal lamp house having an open front with extended finned sides and vertical internal grooves. The light source comprises 12 S.B.C. lamp in holder with m of twin flex. Complete with metal plate having single and triple slits, one side matt black, the other white. Takes 45 mm wide accessories.

Slit plate, 3 & 1 narrow slit for ray Box OP11808 (slit only)

Plastic cylindrical lenses, W45 x FL100 mm for Ray Box OP11808.

12 V 21 W SBC lamp axial filament 48 mm length. Suitable for Ray Box OP11808.

This laser optics kit can be used in bright light conditions thanks to the multi-beam red laser light source. The kit comes complete with Plexiglass (Acrylic) optical accessories and the laser is switchable between 1, or beams, which are all parallel to each other. Comes complete with aluminium storage case. Kit components: Laser class II (1 mW): 1, or laser beams Power supply for laser: 6.3 V mains adaptor mat with disc graduated in degrees and rule graduated in mm, 210 x 380 mm, 150 mm diameter graduated disc Flexible mirror (plane, concave or convex) Optical blocks/prisms: rectangular; parallel faced; semi-circular; biconvex; biconcave lens; semi-circular tank; trapezoid.

Spare triple/wide slit plate for OP94740.

Spare single/double slit plate for OP94740.

Clear Glass with ground ends and optically worked faces. 50 x 50 mm. Power Dioptres +10

Spare colour filter set for OP94740.

An economical LED Ray Box, housed in traditional die cast enclosure. The unit is supplied with slit plate and battery pack as power source, which requires 2 x AA batteries (not included). The battery pack plugs into 4 mm sockets mounted on the Ray Box.Please note that when using a power supply, it must be DC and the volatge must not exceed 3 V. A higher voltage will blow the LED and invalidate the warranty. However, the LED assembly can be replaced. Takes 45 mm wide accessories.

Spare battery box for ray box OP130515.