Newton Ring Apparatus Manfacturers in India , Newton’s Ring Apparatus for Physics Labs, Newton’s Ring Experimental Setup, Newton Ring Setup with Inbuilt Sodium Lamp, Newton’s Rings Apparatus for Wavelength Determination

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This Newton’s Ring Apparatus is a precision-engineered, standalone setup designed for accurate determination of the wavelength of sodium light. The system is constructed with a sturdy metal cast body and integrates a sodium lamp, microscope, power supply, and optical components into a single compact unit. The optical glass plate is fixed at a 45° angle, eliminating the need for alignment, while the smoothly adjustable collimation system ensures sharp, well-defined interference fringes.

This apparatus offers easy operation, superior stability, and high-quality interference patterns, making it ideal for student laboratories, physics departments, and optics demonstrations.

Experimental Objective
To determine the wavelength of sodium light using the Newton’s Ring Apparatus.

Principle and Working
In Newton’s Rings, a plano-convex lens is placed with its convex surface in contact with an optically flat glass plate, creating a thin air film of varying thickness between the two surfaces. When monochromatic light from the sodium lamp is collimated and directed onto a 45° inclined glass plate, it reflects onto the plano-convex lens. The resulting interference between light reflected from the top and bottom surfaces of the air film produces concentric circular fringes known as Newton’s Rings.

By measuring the radii of these interference fringes with the microscope’s micrometer, the wavelength of the monochromatic sodium light can be accurately calculated.

Specifications
Micrometer: Least count 0.01 mm
Eyepiece: Ramsden 10X
Objective: 3X
Sodium Lamp: Inbuilt lamp housing
Construction: Rigid and durable metal cast body