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Apparatus Newton's Ring
Apparatus Newton's Ring (Product Code: SLE/PHY/14) is an optical interference unit used to display the ring pattern formed when light reflects between two surfaces, in physics and optics lab classes. A convex lens rests on a flat lens inside a metallic frame with three terminals, and the complete ring measures 4 inches in diameter and 1-1/2 inches thick. Schools and colleges use it as a sturdy Newton rings apparatus made in India by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala.
Specifications
| Parameter | Detail |
|---|---|
| Phenomenon shown | Interference pattern caused by the reflection of light between two surfaces |
| Optical parts | Convex lens mounted over a flat lens |
| Mounting | Metallic frame with three terminals |
| Size | 4 inches in diameter, 1-1/2 inches thick |
| With monochromatic light | A series of dark and light rings |
| With white light | A series of rainbow-coloured rings |
| Product code | SLE/PHY/14 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Newton's Ring Apparatus Used For?
Where the curved face of the convex lens meets the flat lens, a very thin film of air is trapped, growing thicker away from the contact point. Light reflected from the two surfaces bounding this film interferes, and wherever the path difference matches, the reflections reinforce or cancel. The result is a set of concentric rings centred on the point of contact, a clear visual proof that light behaves as a wave.
Viewed under a monochromatic source such as a sodium lamp, the unit shows crisp alternating dark and light rings that advanced students can measure to find the radius of curvature of the lens or the wavelength of the light. Under ordinary white light the same pattern appears as rainbow-coloured rings, which is ideal for a quick class demonstration. Handle the lenses by the frame only and keep them free of dust, since any particle between the glass surfaces spoils the rings. It suits any optics lab equipment set for senior-secondary and undergraduate practicals.
OEM Manufacturer
Jain Scientific Equipments Private Limited, trading as ScienceLab, is the OEM (original equipment manufacturer) of the Apparatus Newton's Ring. The unit is manufactured at the company's licensed factory at Saha, Ambala, Haryana, India, and supplied factory-direct to colleges, schools, laboratory dealers and importers. Buying from the maker means one point of contact for quotations and for any later replacement parts or matching units — just ask us. See the company profile for background.
Related Physics Lab Equipment
A complete Newton's rings experiment normally needs a light source and a measuring instrument as well:
- Sodium Spectral Lamp — a monochromatic source for sharp dark and light rings.
- Spectral Lamp Power Supply with Lamp Holder — powers and holds the spectral lamp.
- Vernier Travelling Microscope — for measuring ring diameters in quantitative work.
- Newton's Ring Model — an alternative Newton's ring unit in a different frame design.
Explore more optics items in Physics Lab Equipment.
Frequently Asked Questions
What does the Apparatus Newton's Ring show?
The Apparatus Newton's Ring shows the interference pattern produced when light reflects between two surfaces: the curved face of a convex lens and the flat lens beneath it. The trapped air film produces concentric rings around the contact point, demonstrating the wave nature of light.
What size is the Newton's ring apparatus?
The Apparatus Newton's Ring measures 4 inches in diameter and 1-1/2 inches thick. Its convex lens and flat lens are held together in a metallic frame with three terminals, making it compact enough to place on an optical bench or under a microscope.
What light source is needed to see the rings?
The Apparatus Newton's Ring can be viewed with monochromatic light, which gives a series of dark and light rings, or with white light, which gives rainbow-coloured rings. For measurements, a monochromatic source such as a sodium lamp is the usual choice.
Who manufactures the Apparatus Newton's Ring?
The Apparatus Newton's Ring is manufactured by Jain Scientific Equipments Pvt Ltd, which trades as ScienceLab, as the OEM at its own factory in Saha, Ambala, Haryana, India. Colleges and dealers buy it direct from the manufacturer rather than through a trader.
How should the Newton's ring lenses be cared for?
Keep the Apparatus Newton's Ring in a dust-free box, hold it only by the metallic frame, and clean the outer glass faces with a soft lens tissue. Dust or fingerprints between or on the surfaces distort the rings and make diameter readings unreliable.
Can a calibration certificate be provided with SLE/PHY/14?
Whether any calibration or test document can accompany the Apparatus Newton's Ring, code SLE/PHY/14, should be discussed with ScienceLab before ordering. Mention this requirement in your enquiry through the contact page along with the quantity and delivery location.
Request a Quote
Send your requirement for the Apparatus Newton's Ring through the ScienceLab contact page or add it to the enquiry cart with any light source you need. The quotation is prepared by ScienceLab directly as the manufacturer.
Last updated: 24 September 2026
