GLOW in the DARK Self-Adhesive paper. (1 per pack) This paper is coated with a phosphorescent material which glows in the dark after exposure to light. You can cut out any shape you require such as direction arrows, faces, stars and comets, etc. and stick it on. A4 sheet Ref: CDT0245 | Price: £7.99 |
Thermocolour film changes colour with heat (1 per pack) Self-adhesive plastic film coated with a "liquid crystal" thermochromic ink. This film changes colour from black through a range of colours to bright blue as the temperature rises above 27C. Can be used for temperature indicators/warning devices, body jewellery or displays. This pack contains 1 sheet 150mm x 150mm. Ref: CDT0246 | Price: £5.99 |
Make a Display with Thermocolour film. (1 per pack) This pack contains a piece of our Thermocolour Film (CDT0246) 50 x 150mm, 1 metre of resistance wire and a project sheet showing how to make a simple display. The film changes colour from black to bright blue where it is heated by the wire. Make your name appear as if by magic! Ref: CDT0247 | Price: £3.99 |
OPTICAL ILLUSION PLASTIC (1 per pack) This plastic sheet is less than 1mm thick but is engraved so that it looks as though it is much thicker. Put an object on the sheet and it appears to sink below the surface. You won't believe your eyes. Contains one A4 sheet Ref: CDT0249 | Price: £3.99 |
POLARISING FILM (1 per pack). Linearly polarised film for reducing reflections or for polarisation experiments (e.g . View stress patterns in plastic items). Transmissivity: single sheet=42%, 2 sheets crossed polarisation=<0.15%. Thickness 0.14mm. Sheet 10cm x 5cm (makes two 5 x 5cm pieces). Ref: OPF0001 | Price: £5.99 |
POLARISING FILM (10 cm). Linearly polarised film for reducing reflections or for polarisation experiments (e.g . View stress patterns in plastic items). 300mm wide cut to the length you require (in 100mm increments) transmissivity: single sheet=42%, 2 sheets crossed polarisation=<0.15%. Thickness 0.14mm. (Your order will be supplied in one piece 30cm wide by the number of units of 10cm you order) We can supply upto 50cm wide. Ask for a quote. Ref: OPF0001A | Price: £25.35 |
DIFFRACTION GRATINGS (Experiment Pack) (1 per pack) This pack contains 3 different transparent film holographic transmission diffraction gratings. 1000 lines/mm, 500 lines/mm and a crossed axis grating . The high line density produces a wide coloured spectrum of the observed or projected light source similar to a prism. Make a hand spectroscope. Size 15.2 x 3.8cm sufficient for four 35mm slideholders which can easily be made from the cardboard box. Instructions and experiment sheet included. Ref: OPF0002 | Price: £7.99 |
DIFFRACTION GRATING 6"x6" 1000 lines/mm (1 per pack) Single-axis Transmission diffraction grating (1000 lines per mm) transparent film. The high line density produces a wide coloured spectrum of the observed or projected light source similar to that from a prism. Size 15.2 x 15.2cm (6"x6") Ref: OPF0010 | Price: £8.99 |
DIFFRACTION GRATING SLIDES 1000 lines/mm (Pack of 10) Pack of 10 card mounted Single-axis Transmission diffraction grating (1000 lines per mm). The high line density produces a wide coloured spectrum of the observed or projected light source similar to a prism. Mount size 5x5cm Ref: OPF0009/10 | Price: £5.99 |
DIFFRACTION GRATING SLIDES 1000 lines/mm (Pack of 30) Pack of 30 card mounted Single-axis Transmission diffraction grating (1000 lines per mm). The high line density produces a wide coloured spectrum of the observed or projected light source similar to that from a prism. Mount size 5x5cm Ref: OPF0009/30 | Price: £15.00 |
DIFFRACTION GRATING SLIDES 1000 lines/mm (Pack of 40) Pack of 40 card mounted Single-axis Transmission diffraction grating (1000 lines per mm). The high line density produces a wide coloured spectrum of the observed or projected light source similar to that from a prism. Mount size 5x5cm Ref: OPF0009/40 | Price: £19.98 |
DIFFRACTION GRATING SLIDES 1000 lines/mm (Pack of 100) Bulk pack of 100 card mounted Single-axis Transmission diffraction grating (1000 lines per mm). The high line density produces a wide coloured spectrum of the observed or projected light source similar to that from a prism. Mount size 5x5cm Ref: OPF0009/100 | Price: £40.00 |
DIFFRACTION GRATING SLIDES 500 lines/mm (Pack of 10) Pack of 10 card mounted Single-axis Transmission diffraction grating (500 lines per mm). The high line density produces a wide coloured spectrum of the observed or projected light source similar to a prism. Mount size 5x5cm Ref: OPF0020/10 | Price: £5.99 |
DIFFRACTION GRATING SLIDES 500 lines/mm (Pack of 30) Pack of 30 card mounted Single-axis Transmission diffraction grating (500 lines per mm). The high line density produces a wide coloured spectrum of the observed or projected light source similar to that from a prism. Mount size 5x5cm Ref: OPF0020/30 | Price: £15.00 |
ROUND SPIRIT LEVEL This round spirit level allows you to level up your equipment easily and simply. Just stick it to any surface you want to get horizontal and adjust the level until the bubble is central in the circle. Fluorescent green fluid and a white background make the level very easy to read. 18mm diameter x 9mm high. Ref: Q0351 | Price: £2.00 |
JOYSTICK SWITCHES (3 - per pack) 4 switches with centre-off position. Moving the joystick in any direction will activate one or two of the switches depending on direction. Centreing the joystick opens all switches. Ref: Q2408 | Price: £1.00 |
Joystick Switches (20 - per pack) 4 switches with centre-off position. Moving the joystick in any direction will activate one or two of the switches depending on direction. Centreing the joystick opens all switches. Ref: Q2408/20 | Price: £5.00 |
