Physics

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.

LED assembly for OP130515.

Comprehensive light and optics set which includes a 3 beam ray box (each beam available in dual colours – white or red) and an array of lenses and prisms, teacher’s notes and 9 pupil work cards. The set is an ideal accompaniment to any advanced study of light and optics with experiments to show refraction and reflection through various shaped prisms and lenses, the splitting of light into the rainbow colours, how internal reflection is used in fibre optic cables and the appropriate lenses to use to correct long and short sightedness. Requires 3 x AAA batteries.

Spare single and double slit for OP180740.

A metal ray box with sliding lamp holder. Supplied with single/double wide/triple slit plates, and 12 V 21 W lamp. Captive flying leads with 4 mm plugs for connection to power supply. Takes 50 mm wide accessories.

This comprehensive kit with a ray box and 29 optical components is ideal for performing a large variety of reflection, refraction, and colour mixing experiments. The ray box consists of a 12 V, 24 W halogen lamp producing convergent, divergent or parallel beams. One end contains an adjustable cylindrical convex lens (for parallel beam), and on the other end a triple aperture system for colour mixing experiments (lateral aperture is provided with adjustable hinged mirror). All apertures in the box are provided with vertical channels to hold slit plates and colour filters. •Versatile ray box with hinged mirrors & 29 optical components makes it the most comprehensive kit available for demonstrating geometrical optics and the study of light to physics students •Includes a high-quality ray box with a bright halogen lamp providing divergent and parallel beams and hinged mirrors for colour mixing experiments •Includes a comprehensive instruction guide with 18 activities •Components include: 1 x ray box with hinged mirrors, 1 x lamp holder, 2 x 12 V, 20 W bulbs, 2 x 4 mm banana plug leads, 2 x slit plates, 1 x rectangular prism, 1 x 45/45/90 prism, 1 x Equilateral prism, 1 x 30/60/90 triangular prism, 1 x semi-circular prism, 1 x bi-concave lens, 2 x bi-convex lens, 1 x plane mirror on stand, 1 x parabolic mirror, 1 x semi-circular mirror, 1 x semi-circular dish, 8 x colour filters, 8 x colour cards, 1 x manual •A 12 V DC power supply is required for the ray box. Ruler, protractor, and paper are required for the activities.

Students can carry out wide range of optics experiments with this high quality, robust ray box. Designed with two slots to hold blanking plates, seven grooves for lenses. Supplied with 12 V, 24 W, bulb, holder, slit plates blanking plates made from heat resistant plastic. Takes 50 mm wide accessories.

Spare slit plate, pack of 2, for Premium Ray Box OP94745.

Spare slit plate, single and triple, for Premium Ray Box OP94745.

Collimating Lens, Spare 50 x 50 mm f.l. 75 mm for Ray Box Premium, OP94745

This Spectral lamp house is designed for use with spectral lamps which fit E-27 socket. The spectral lamp must never be connected to the mains, but requires a special control transformer. The Spectral lamp house is equipped with a ventilator ensuring that the surface of the Spectral lamp house does not exceed 60 °C.

Control transformer required to power the Spectral Lamp Holder OP110180. The unit has specialised 3-pin socket for connecting the lamp holders (female switch that fits E27 3-pin special switch). •Current: 1 A max. •Power supply: 230 V AC •Dimensions: (W x H x D): 190 x 117 x 230 mm •Weight: 3.5 kg Note:- Lamp Holder not supplied.

Sodium spectral lamp with E27 screw type fitment. Requires lamp holder (OP110180) and transformer (OP110185).

Mercury spectral lamp with E27 screw type fitment. Requires lamp holder (OP110180) and transformer (OP110185).

For quick and safe setting up of spectral tubes. The spectral tube is mounted from the front in the insulated holders with electrodes, where the lower holder is spring loaded parallel to the tube axis. The holder is provided with power supply that can deliver 6 kV DC at max 2 mA to the electrodes built into the base of the insulated holder. Can be used with spectral tubes OP66582 to OP94616 and with many other types of spectral tubes. For 230 V AC. Dimensions (L x H x W): 78 x 78 x 290 mm.

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length x 6 mm diameter. Total length approx 220 mm.

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length x 6 mm diameter. Total length approx 220 mm.

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length x 6 mm diameter. Total length approx 220 mm.

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length x 6 mm diameter. Total length approx 220 mm.

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length x 6 mm diameter. Total length approx 220 mm.

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length 6 mm diameter. Total length approx 220 mm.

Straight pattern, fitted with 6.5 mm diameter contact cap at each end. For observing line and band spectra from various noble and diatomic gases. The capillary tube measures 80 mm length 6 mm diameter. Total length approx 220 mm.

For rapid examination of spectral composition of white light. Consisting of metal tube with draw out focussing and an adjustable slit fitted with achromatic objective glass and element prism.

This direct vision spectroscope incorporates fine slit in conjunction with an efficient blazed grating, which transmit high proportion of energy into the first and second order spectra, giving very bright and sharp spectra. The third order spectra can also be seen, although not as brightly.

Spectroscopy is an interesting visual subject for students. This spectroscope helps teachers to demonstrate simply and clearly. Uses include; •Fraunhoffer lines •Flame test in chemical analysis •Absorption spectra through liquids •Bright line spectra from discharge tube Features; •Large diameter eyepiece aperture facilitates comfortable viewing of the single, large and bright spectrum which is centrally placed in the field of view •High quality optical components ensure that absorption bands show up clearly – even weak bands that are sometimes difficult to detect •The spectrum is generated by a particularly bright transmission diffraction grating of 600 lines/mm •Fixed construction – no need for adjustment •Robust assembly to withstand years of student handling •Benchtop size: 105 mm x 25 mm •Boxed weight: 115 g •Supplied in a protective rigid box