Technical data

Diffraction at a grid

Article no: P1069700

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

Principle

Once it has been recognised in lessons that light can be reflected and refracted just like water waves, the question poses itself of whether light has wave character. If it does, then it must be possible to demonstrate interference phenomena as with water waves.

This experiment on diffraction at an optical grating provides a convincing proof of the interference properties of (visible) light and hence of its wave character.

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

Investigate the phenomena occurring when a light beam passes through an optical grating.

Scope of delivery

Optical profile-bench for student experiments, l = 600 mm	08376-00	1
Light box, halogen 12V/20 W	09801-00	1
Bottom with stem for light box	09802-20	1
Diaphragm with slit	09816-02	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	1
Mount with scale on slide mount	09823-00	1
Screen, white, 150x150 mm	09826-00	1
Diaphragm holder, attachable	11604-09	2
Grating, 80 lines/mm	09827-00	1
PHYWE Power supply, 230 V,DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A	13506-93	1