Technical data

How is light attenuated when it passes through matter?

Article no: P1417201

Principle

In order to be able to set up in such a way that all the slides fit between the light sensor and the LED without having to shift the mounts, the 5 slides are first held between the light sensor and the tube on the LED and the mounts are pushed together accordingly.

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

How id light attenuated when passing through substances? When light passes trough a substance or liquid the intensity is attenuated. This attenuation can be demonstrated by means of a light sensor. In this experiment the number of absorbing layers (grey filters) is modified and the light intensity is measured. Eventually you will develop a formula in this experiment for the reduction in intensity as a function of the thickness of the layer that the light passes through. Note: The variation in the number of grey filters can be interpreted as a variation in the thickness of a single body.

Scope of delivery

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
Foil filter grey 50% in slide frame glasless	09851-11	5
LED - white, with series resistor and 4 mm plugs	09852-60	1
Light sensor with amplifier, adjustable	09852-70	1
Power supply, 5 V DC	09852-99	1
Stray light tube	09852-71	1
Stray light tube for LED, Di = 8 mm, l = 40 mm	09852-01	1
PHYWE Power supply, 230 V, DC: 0...12 V, 2 A / AC: 6 V, 12 V, 5 A	13506-93	1
PHYWE Digital multimeter, 600V AC/DC, 10A AC/DC, 20 MΩ, 200 µF, 20 kHz, −20°C…760°C	07122-00	1
Connecting cable, 32 A, red, various lengths	07362-01	2
Connecting cable, 32 A, blue, various lengths	07362-04	2