Waves

This hard acrylic 13mm (1/2") diameter light pipe is 610mm (2ft) of pipe coiled up at one end to demonstrate light transmission from end to end. It transmits light like fibre

Plastic, adjustable lens holder to accommodate a range of lens sizes.

Spectrum Tube - ArgonArgon gas-filled discharge tube for studying typical spectra of the different gases and for use in calibrating spectrometers. The glass body

Spare armature for the Philip Harris Vibration Generator (B8H30701). Pack of 10

A battery operated LED Ray Box comprising of a die cast enclosure which delivers white light but runs much cooler than conventional incandescent lamp models. It uses the

Clear acrylic bioconcave and bioconvex blocks. Thickness: 25mm. Bioconvex Size: 115mm x 75mm. Pack of 2 (one of each)

Low Output Crystal Microphone by Unilab.Two of these Crystal Microphones can be used with the Unilab Fast Timer (B8H28573) to carry out the Speed of Sound Practical.The

Rectangular clear Perspex block.  Useful for Ray Optics experiments.  All faces are fully polished. Dimensions: 115mm x 65mm x 20mm

Semi-Circular clear Perspex block. All faces are fully polished. Diameter: 90mm Thickness: 16mm

Spare clips for the Philip Harris 'g' by Free Fall Apparatus (B8H25316) trap door. Pack of 10

Spare collimating lens for the Ray Optics Box (B8R06342). Dimensions: 60mm x 60mm x 20mm

LED Colour Mixing ApparatusThis colour mixing apparatus consists of 3 LED Lamps that project Red, Blue and Green light. Each lamp is flexible and is connected to

These Colour Paddles can be used for simple experiments in subtractive colour mixing. A set of six transparent acetate paddles, in the form of a fan. One each of: Yellow, Red,

Pack of 5 A4 sized sheets of coloured acetate. The sheets are easily cut to make filters for colour experiments. Ideal for exploring colour-mixing and using with other colour

Concave Glass Mirrors - 50mmOptically worked, silvered back with protective coating. Diameter: 50mm, Focal Length: 200mm Pack of 10

The Diffraction Slide comprises of a card mount (90mm x 40mm approximately) with three 16mm x 9mm apertures, each containing a diffraction grating replica:

Diffraction Grating - 300 lines/mm Dimensions: 50mm x 50mm mount.

Diffraction Grating - 600 lines/mm Dimensions: 50mm x 50mm mount.

Did your students ever wonder why a train gets louder as it approaches? Why not show them the physical phenomenon known as the doppler effect with the battery driven device. Load

Spherical Lenses: Double ConcaveWith optically worked faces and ground edges, for educational purposes. Diameter: 50mm Focal Length: 100mm Power: -10D Refractive

Spherical Lenses: Double ConcaveWith optically worked faces and ground edges, for educational purposes. Diameter: 50mm Focal Length: 200mm Power: -5D Refractive

Spherical Lenses: Double ConcaveWith optically worked faces and ground edges, for educational purposes. Diameter: 50mm Focal length: 50mm Power: -20D Refractive

Spherical Lenses: Double ConvexWith optically worked faces and ground edges, for educational purposes. Diameter: 38mm Focal Length: 50mm, Power: +20D Refractive

Spherical Lenses: Double ConvexWith optically worked faces and ground edges, for educational purposes. Diameter: 50mm Focal Length: 100mm Power: +10D Refractive