Description

Principle

For carrying out this experiment the room should be rather dark, particularly for the part where the spectrum is viewed through the grating. It is important not to look directly from the front into the light cone. If you have a problem seeing a colour there is the further option of slightly increasing the distance between the fluorescent screen and the tube and viewing the colour of the light spot on the screen. In this case only that part is reflected which does not contribute to the fluorescence.

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

In this experiment, the number of absorbing layers (grey filters) is changed and the light intensity is measured. As a result, you will develop a formula for the decrease in intensity depending on the thickness of the layer through which the light passes. Note: Varying the number of grey filters can be viewed as a change in the thickness of a single object.

Scope of Delivery