Timstar

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

Double convex. Optically worked glass with ground edges. Dimensions (Dia.): 38 mm.

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.

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

The performance of this ultra-low cost spectroscope is comparable with instruments costing much more. It uses a CD or DVD as a reflective diffraction grating and clearly shows Fraunhofer lines in the spectrum arising from natural light, distinctive emission bands from artificial sources such as sodium lamps and differences between different types of fluorescent lighting tubes. The spectroscope is made from polypropylene and supplied in flat pack form for quick self-assembly. It comes with free CD but can be used with any CD (or DVD for higher resolution).

An economically priced instrument, which is nevertheless capable of much useful quantitative work. The main structural parts, including the collimator and telescope bodies are heavy castings, other metal parts being bright plated. SCALE: 170 mm dia. divided to 360° 1°, independently rotatable with locking screw. spring-loaded vernier scale attached to the telescope mount provides readings to 0.1° (6 minutes of arc). COLLIMATOR: Mounted on a fixed pillar with axis adjustment. Objective lens 150 mm FL, an aperture of 21 mm and is carried in spiral focusing systems. Unilaterally adjustable slit 6 mm long. TELESCOPE: Mounted on moveable pillar with adjustment, locking screw and axis adjustment. Objective lens has 170mm FL, 21mm aperture and is carried in spiral focussing system. RAMSDEN EYEPIECE: With cross wires and locking ring focus adjustment. PRISM TABLE: The table is provided with three leveling screws and is line marked to assist placement of prism. STANDARD ACCESSORIES SUPPLIED: 1 prism clamp for prisms up to 40 mm high, 1 diffraction grating holder, aperture 25 x 25 mm, 1 small screwdriver, 1 tommy bar for axis adjustment and case.

Exclusive to Timstar, this superb, durable, easy to set-up and use digital spectrometer creates real-time images, graphs and measurements via the exclusive software. Once the software has been downloaded and installed, the spectrometer simply plugs into a USB port and the live-feed camera is selected by clicking on a tab. That's it you are now up and running. The software also includes a reference library of common elements. Suitable for use with: flame emissions from burning salts; spectral (gas) tubes; LED's LED columns; many other types of visible light source. Includes Camera, Tripod, USB lead, Software and Tutorial Videos. For video demonstration: timstar.co/RSPECvideo • Simple to set-up and easy to use. • All students see the same thing via classroom projector and whiteboard. • Camera auto-focuses and adjusts to wide range of light conditions. • Spectral range: 390 to 700 nanometres. • Accuracy: 1% or better. Spectroscopic features as narrow as nanometres can be measured. • Works with any Windows computer (XP or more recent). • Designed for education and research • No tricky calibration or adjustments to make- just plug and play • Comes complete with instructional videos (more than 30 minutes total)

Equal mass diameter cylinders showing the difference in density of metals. Comprises six 100 g, 16 mm diameter cylinders of brass, lead, copper, iron, zinc, and aluminium in wooden holding block.

A set of cubes for density investigations or comparison of different materials, consisting of nine 25 mm sided cubes. Set includes brass, iron, copper, aluminium, hardwood (beech), softwood (pine), nylon, PVC and acrylic. Supplied in wooden box.

This Mole Set contains samples of four different metals and helps students to visualise mole of substance in solid state, as well as developing better understanding of the concept of the mole, mass, molar mass, along with the differing properties of the various metals. The set contains four element specimens: copper, iron, zinc and aluminium, each containing approximately one mole (6.023 1023 atoms) of the element. Comparison of each sample, side-by-side, clearly shows that the same molar amount of different elements have different masses and occupy different volumes, due to each element having different atomic mass and density.

A quality piece of apparatus to demonstrate the relationship between the extension of a spring and the load applied to it. Consists of a moveable 120 mm scale that is mounted on a stand and base. Comes complete with a combined mass hanger/pointer which is connected to the suspended spring to allow easy reference to the scale. Dimensions (H x Dia.): 250 x 100 mm.

Comprising aluminium, brass, copper, iron, lead, zinc and tin. By examining properties such as magnetism, density and appearance, and comparing to known data, students can identify each material. 10 mm dimensions set.

Comprising aluminium, brass, copper, iron, lead, zinc and tin. By examining properties such as magnetism, density and appearance, and comparing to known data, students can identify each material. 20 mm dimensions set.

Set of discs comprising aluminium, brass, bronze, copper, nickel silver, steel, stainless steel, and zinc. The metal name is stamped onto each disc.

Set of metal pieces each stamped with the identifying letter. Comprising: soft aluminium, hard aluminium, magnetic stainless steel, non-magnetic stainless steel, zinc, zinc plate, nickel silver, bronze, galvanised steel, mild steel, copper and brass.

Dimensions, 200 x 12 mm.

Dimensions, 200 x 12 mm.

Dimensions, 200 x 12 mm.

Dimensions, 200 x 12 mm.

This economical version of Young's modulus apparatus includes 0 - 30 mm scale and moveable vernier readable to 0.1 mm. Both have bars with clamping screws for the wires and hooks for the tension weight and loading masses. The apparatus come supplied with clamp for fitting and tension weight, mass 1.3 kg approx. for the comparison wire. Complete with wires.

For the experimental determination relationship between load applied to wire and the resulting extension. Consisting of an engraved brass scale with vernier reading to 0.1 mm. Complete with tension weight but without load masses.

Set of 6 wires for use with Young's Modulus, Searle's Pattern (MA190050). Please note this is wires ONLY.

Designed by Timstar in response to customer enquiries, the Rubens' Tube provides a memorable demonstration of standing waves. The Rubens' Tube consists of a 10 cm diameter aluminium tube with row of small holes drilled along the top, and a 15 W loudspeaker mounted at one end, and is supplied with instructions. Natural gas or LPG can be used, with a length of burner tubing to connect it to the supply. The speaker can be driven directly using signal generator with power output, but Rubens' Tube Driver (SO180900) is recommended for best effect.

Useful set of accessories for use with the microwave apparatus, including the following, mounted on feet for free standing: • Aluminium plates, 200 mm x280 mm • Aluminium plate, 60 mm x280 mm • Perspex plate, 200 mm x280 mm • Polarization grille, 200 mm 200 mm

This battery operated microwave probe detector allows the student to measure, plot and investigate the microwave field intensity. The probe is slightly less sensitive than the normal receiver, and is largely non-directional. The unit benefits from built in amplifier with variable gain and meter displaying the relative signal strength.Output can be taken via the BNC connector either to an oscilloscope or meter. The probe detector is compatible with most 2.8 cm microwave educational systems on the market. • 2.8 cm microwave probe receiver • Mobile, easy to use, battery operated • Built in illuminated signal strength meter • BNC terminated output for use with oscilloscope, meter or audio amp • Gain control • Non-directional

This apparatus is designed for demonstration of standing waves and for determination of the wavelengths of sound waves in air. The tube is supplied with a millimetre scale and moveable piston for changing the length of the air column. (You will also need an external sound source e.g. 1 kHz tuning fork.) Dimensions (L x Dia.): 660 x 300 mm.

This apparatus is ideal for all resonance investigations in air columns particularly the Salters MUS Activity 9. The main tube takes high power sound wave generator unit plugged in to one end. The generator is driven by a standard laboratory signal generator and as the frequency is adjusted the various resonance modes are detected by increased loudness of the note. The open pipe can be studied or a variable length closed pipe can be used by inserting the piston assembly provided. By using a higher amplitude on the generator, Kundt's tube investigations can be undertaken. Fine cork or polystyrene dust is distributed throughout the tube and at resonance the powder gathers at the nodes. Wavelengths can be easily measured. To get a good response a closed tube is preferable, to reduce the sound levels in the laboratory while producing a measurable effect. The apparatus comes complete with two supports for the tube, sound wave generator, resonance tube, closing bung and full instructions. Dimensions (L x Dia.): 1 metre x 50 mm.

An overhead projector type ripple tank for demonstration of various wave phenomena, including reflection, refraction, diffraction, and interference. The unit comprises a shallow 40 x 40 cm tank with a scratch-resistant acrylic window on the bottom, supported by four adjustable legs. Two arms on the side hold an eccentric motor and bar assembly, onto which either two point dippers, or a plane-wave dipper can be attached. The motor and bar assembly is suspended by springs so the vibration is not transmitted to the tank. A bright point light source is held overhead, which shines down through the water in the tank, and casts a shadow of the waves on the bench below. The following accessories are included: Concave, convex, rectangular Perspex plates; curved reflector; two large one small barriers; two point dippers; hand stroboscope; banana leads; instructions. The motor requires continuously variable 0-5 V DC power supply, and the lamp requires 12 V AC supply. Alternatively, the ripple tank can be driven by the SO180324 ripple tank LED driver.