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Technical data


Newton's rings

Article no: P1195300

Principle

When a parallel beam of light strikes a tapered film of air created between one plane and one spherical glass body, a pattern of concentric ring-shaped bands is formed due to interference of light waves. The arrangement is called the Newtonian chromatic glass and the interference pattern Newton's Rings.

These interference rings are brought about because a part of the light passes directly through the plane-parallel plate and the lens body and another part is first reflected at the lens surface and then at the glass plate (comp. Fig. ).
The students should become familiar with the phenomenon of Newton's Rings; they should gather measurement data on the phenomenon in an experiment and learn to pull this data to a practical use.

Benefits

  • Multifunctional light box - All-in-one: Can be used for geometric optics on the table, colour mixing and on an optical bench
  • Extension with others sets at anytime, no additional light sources needed, recognition value for students

Tasks

How can we explain the phenomenon of Newton's Rings? Direct a parallel beam of light through a Newtonian chromatic glass and with the aid of the resulting rings, determine the radius of the lens-shaped glass body.

 

Scope of delivery

Light box, halogen 12V/20 W 09801-00 1
Bottom with stem for light box 09802-20 1
Optical profile-bench for student experiments, l = 600 mm 08376-00 1
Colour filter set, additive (red, blue, green) 09807-00 1
Lens on slide mount, f=+50mm 09820-01 1
Lens on slide mount, f=+100mm 09820-02 1
Slide mount for optical bench 09822-00 2
Screen, white, 150x150 mm 09826-00 1
Plate mount for three objects 09830-00 1
Plate and lens f. Newton rings 08551-00 1
PHYWE Power supply, 230 V, DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A 13506-93 1
Measuring tape, l = 2 m 09936-00 1

PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com