Technical data

At which wavelength does an LED emit light?

Article no: P1419201

Principle

In this experiment, for various LEDs (light emitting diodes) the wavelength is determined by means of a grating using the subjective method.

Benefits

Specified for the requirements of the german final secondary-school examinations
Especially for secondary schools
Quantum and wave optics in a student experiment

Tasks

At which wavelength does an LED emit light? The wavelength is characteristic of the colour of the light. Determine the wavelength of LEDs by means of measurements and observations using a diffraction grating.

Scope of delivery

LED - blue, with series resistor and 4 mm plugs	09852-40	1
LED - green, with series resistor and 4 mm plugs	09852-30	1
LED - red, with series resistor and 4 mm plugs	09852-20	1
LED - UV, with series resistor and 4 mm plugs	09852-50	1
Grating, 500 lines/mm, in slide frame, glassless	09851-16	1
Support base, variable	02001-00	1
Stand rods, stainless steel, various sizes	02037-00	2
Slide mount without angle scale	09851-02	2
Diaphragm holder, attachable	11604-09	2
Measuring tape, l = 2 m	09936-00	1
PHYWE Power supply, 230 V, DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A	13506-93	1
Connecting cable, 32 A, red, various lengths	07362-01	1
Connecting cable, 32 A, blue, various lengths	07362-04	1