An 'S' shaped 220 x 20 x 20mm acrylic bar which can be used in conjunction with a ray box to demonstrate total internal reflection.

• Helps students understand principles of optical communications
• Bottom of bar is white to aid visibility
• Size 220 x 20 x 20mm
• Eisco type PH0587

Rectangular acrylic block from Eisco, suitable for use as a refraction plate.

• Size 115 x 65 x 18±1mm
• Manufacturer's part PH0568C

Semi-circular acrylic block from Eisco with all faces fully polished.

• Diameter 90mm
• Thickness 16mm
• Manufacturer's part PH0570A

A set of highly polished, acrylic equilateral prisms. The prisms have 25mm sides and lengths of 25, 50 and 100mm.

• Set of 3 prisms
• 25, 50 and 100mm long
• 25mm sides
• Eisco type PH0554SET

A rectangular solid glass block made from bubble-free optical glass with optically worked surfaces. All angles are accurately worked with edges slightly bevelled.

• Size 115 x 65 x 18mm
• Approx. weight: 366g
• Eisco type PH0566D

A 90mm semi-circular solid glass block with a nominal thickness of 15mm. The block is made from clear glass with all faces polished.

• Eisco type PH0570C

A set of seven clear acrylic blocks. The blocks are 25mm thick and are fully polished on all faces.

• Rectangle 75 x 50mm
• Semi circle 75mm dia.
• Triangle 60° x 60° x 60°, 58mm side
• Triangle 90° x 45° x 45°, 75mm hypotenuse
• Triangle 90° x 60° x 30°, 75mm hypotenuse
• Bi-convex 75mm long, curved faces 100mm radius
• Bi-concave 75mm long, curved faces 100mm radius
• Wooden storage box
• Eisco type PH0571

A double convex lens made from clear Acrylic.

• Double convex
• One plane surface is frosted
• Length 89mm
• Eisco type PH0577A

A double concave lens made from clear Acrylic.

• Double concave
• One plane surface is frosted
• Length 86mm
• Eisco type PH0577B

This traditional ray box has three openings, two of which can be used simultaneously by two sets of pupils. Only a minimum of accessories are needed to cover a wide range of optics experiments.

The two side openings each have two slots for blanking plates or 50mm slide accessories. The front opening has seven grooves for accessories and lenses. The front opening has been designed so that when used with a biconvex cylindrical lens of 75mm focal length, divergent or convergent rays are obtained through the slit plate.

• Set includes:
• Ray box with 2m flex and two 4mm plugs
• 12V, 21W, B15 bulb
• 1x slit plate
• 2x aluminium blanking plates
• Eisco type PH0602A

Note:A12V 2A power supply is required (not included).

A set of six un-mounted 100 x 100mm coloured plastic sheets. Three sheets feature primary colours, three feature secondary colours.

• Coloured plastic sheets without mounts
• Size 100 x 100mm
• Supplied as a set of 6
• Eisco type PH0645

A set of eight coloured acetate filters mounted in 50 x 50mm plastic frames suitable for use in optical boxes, etc.

Three slides feature primary colours and the other three feature secondary colours.

• Mounted colour filters for optical boxes or other physics experiments
• Colours: red, blue, green, magenta, yellow, aqua and violet plus a slide showing three overlapping coloured circles
• Frame size 50mm x 50mm
• Supplied as a set of 8
• Eisco type PH0648A

This industry standard spectroscope can be used for measuring light wavelengths and colours from various light sources. The spectroscope measures wavelengths from 400 to 700nm for detailed examination.

• Measures wavelengths from 400 to 700nm
• Eisco type PH100QA

This equilateral clear glass prism is ideal for use in the laboratory and classroom during physics and other science lessons.

• Length and height 38mm
• 60° x 60° x 60°

An economical, yet effective Optical Bench Set that provides accurate demonstrations of basic optical principles.

• The complete system includes:
• 1x Optical bench-double-sided metre stick
• 1x Object and marker
• 1x Screen support
• 1x Candle holder
• 1x Pair of metal supports
• 2x Lens supports: 4cm and 7.5cm
• 5x White board screens, each 10 x 12.5cm with a millimeter scale along one side
• 12x paraffin candles

This hollow glass prism can be filled with specific liquids in order to carry out refraction experiments.

• Side length 50mm

This apparatus demonstrates the discovery, made by Newton, that white light is made up of seven individual colours. The apparatus consists of a pulley mounted on a metal stand. The seven-coloured disc is driven by a belt connected to a hand-driven wheel. When the disc is rotated fast, the eye is unable to distinguish between individual colours and perceives it as white.

• Demonstrates that white light is made up of 7 individual colours
• When rotated fast, the eye is unable to distinguish colours and sees white

The really intriguing aspect of this device is the use of a common place CD or DVD replacing either an expensive prism or specially made diffraction grating. The performance of this ultra-low cost spectroscope is comparable with instruments costing much more.

It clearly shows Fraunhofer lines in the spectrum arising from natural light and distinctive emission bands from artificial sources such as sodium lamps. Differences between fluorescent lighting tubes, e.g., white light or 'warm' light types, can be easily identified by their distinctive emission bands.

The spectroscope is made from virtually indestructible polypropylene and supplied in flat pack form, taking about 30 seconds to assemble. It comes with a CD but can be used with any CD (or a DVD for higher resolution).

• Uses a CD or DVD instead of an expensive prism or diffraction grating
• Clearly shows Fraunhofer lines in various spectrums
• Made from virtually indestructible polypropylene
• Supplied in flat pack form
• Supplied with a CD
• Can be used with a DVD for higher resolution

This effective laser emits an intense monochromatic red beam of wavelength 630 to 640nm at 0.9mW (Class II operation). Typical beam divergence is approximately 1 millirad. The laser beam can be modulated by applying an external digital or analogue waveform to the 3.5mm jack socket on the rear panel.