Newton’s Colour Disc
Product Code : LSK-PL-10337
Newton’s Colour Disc (SKU LSK-PL-10337) is a hand-driven demonstration that white light can be made from all the spectral colours. A 180 mm multi-coloured disc on a metal stand is spun by a belt from a hand wheel until the colours blend. It suits middle-school and secondary lessons on light and colour. Every disc is built on the Science Lab Supplies shop floor at Plot 448, HSIIDC Industrial Area, Saha, Ambala, which manufactures it and quotes it directly to schools, colleges, tender contractors and distributors.
Specifications
Each fact about this belt-driven colour disc has its own row below. In short, a 180 mm disc painted in the spectral colours turns on a metal stand, and a hand-driven wheel spins it through a belt, so the demonstrator can raise the speed steadily until the separate colours can no longer be told apart.
| Specification | Value |
|---|---|
| SKU | LSK-PL-10337 |
| Disc diameter | 180 mm |
| Disc | Multi-coloured, in the spectral colours |
| Drive | Belt |
| Operation | Hand-driven wheel |
| Mounting | Metal stand |
| Finish | Well finished |
| Demonstrates | White light composed from the spectral colours, by rotation of the disc |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Newton’s Colour Disc
The colour disc shows the reverse of dispersion: a prism splits white light into colours, and the spinning disc recombines them in the eye. It supports lessons on light and colour from middle school upwards and pairs naturally with prisms and ray boxes in school physics lab equipment in India.
- Middle-school science: white light is made up of several colours, introduced alongside the Educational Primary Colour Kit for colour recognition and mixing.
- NCERT Class 10 science, the human eye and the colourful world: splitting light with an equilateral Prism Different Angle, then recombining it on the disc.
- Science exhibitions and teacher-training demonstrations on persistence of vision.
Standard Scope of Supply
Each unit is supplied as described above: the 180 mm multi-coloured disc mounted on its metal stand, with the belt and hand-driven wheel that spin it. Any items you want alongside it, such as prisms or filters, can be added as separate lines on the quotation for the same delivery.
Packing, MOQ and Lead Time
Quotations can be raised for one colour disc or for enough units to equip every science room in a school group. Each quote sets out the packing, delivery time and price for the quantity you name, and other light-and-colour items can be added to the same document.
Holding an Importer-Exporter Code as a registered exporter, Science Lab Supplies is able to ship to buyers in Peru, Egypt, Iraq, Nigeria, Kenya and Ghana. A colour-disc order can begin as a short note on the contact page or a list built in the enquiry cart; school boards buying by tender will find the process on the lab tender page.
Frequently Asked Questions
What does Newton’s Colour Disc demonstrate?
It shows that white light is a mixture of the spectral colours. When the multi-coloured disc spins fast, the colours merge and the disc looks pale, the reverse of splitting light with a prism.
How is the disc turned?
By hand. A belt links the 180 mm disc to a hand-driven wheel on the metal stand, so the demonstrator controls the speed directly and can slow down to show the separate colours again.
Why does the spinning disc look greyish rather than pure white?
The coloured sectors reflect mixtures of wavelengths rather than pure spectral colours, so the blend is a light tint. Students can still see clearly that the colours combine as the speed rises.
Does Science Lab Supplies make this disc itself?
Yes. The disc, stand, belt and hand wheel are produced together in the company’s Saha, Ambala factory, so the price and delivery time on your quotation come from the people who manufacture it, with no trading house in between.
Related Light and Colour Equipment
These Physics Lab and Light and Optics items extend a light-and-colour lesson: two further colour discs for comparison, filters and a shadow apparatus for colour mixing, prisms for dispersion, and a ray box for reflection and refraction. All of them can go on one quotation with the hand-driven disc.
- Newton's Disc — removable 150 mm PVC disc turned by a 3–7.2 V DC motor, with safety sockets.
- Optical Device for Color Demonstration, Color Disk — 200 mm disc with two sets of spectra, six LED bulbs and a mixer control box.
- Color Filter Set — six 8 x 10 in filters in primary and secondary colours.
- Colour Shadow Apparatus — red, green and blue light sources for additive mixing and coloured shadows.
- Glass Prism (Equilateral, 50 x 50 mm) — optical-glass prism for dispersion and refractive-index work.
- Acrylic Prism — set of three polished acrylic prisms, 25, 50 and 100 mm long.
- Raybox with Accessories — plano-convex lens and two-slit, three-slit and broad-slit masks.
Browse the full Physics Lab range, the Light and Optics range, or all physics lab equipment.
Last updated: 22 October 2026
