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Principle
This experiment must be carried out in a completely blacked out room. Only in this way can all the desired effects be observed.
Task
Why is the sky blue? Why is the sky blue and why is it red in the evening when the ...
Care is to be taken in particular that the experimental setup is not shifted during the experiment, in particular the ruler because otherwise no reference point for the comparison of the measuring curves is available. Furthermore, this experiment has ...
Because stray light barely affects this measurement, the clasroom only needs to be slightly darkened in order to make the interferences on the screen visible. The distances must be measured very precisely because even a small imprecision will lead to ...
The setup of the experiment is uncritical and provides in general good and reliable measured results.
What is the distance between the grooves on a CD? A CD made with grooves similar to a record. In contrast to ...
The experiment can be carried out in daylight because the diffraction pattern from a red LED can clearly be seen. However, the arrangement should not face into the light. It must be ensured that as far as possible only one Koppelmann pattern is always ...
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 togethe ...
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 ...
In this experiment you will develop a rule about how the light is attenuated when it passes through coloured liquids.
How is light attenuated by liquids? If light passes through a substance, irrespective ...
According to the findings of quantum physics, the energy of electromagnetic radiation (light) occurs only at discrete values. As a fundamental natural constant, Planck's constant h describes the increments of this energy gradation of light.
Performing this experiment is not difficult and it can be carried out in daylight as any light interference is shielded by the tube.
When is an LED a receiver? A light emitting diode or LED is an electronic se ...
For the setup and performance of the experiment it is important that the room is darkened and that the solar cell is orientated in such a way that it can pick up only a small amount of stray light. (This means that in the classroom the solar cells sho ...
In this experiment a relationship between the intensities of the radiation and the photo-electric current will be generated.
How does the photo-electric current of a solar cell depend on? The more light t ...
In this experiment, for various LEDs (light emitting diodes) the wavelength is determined by means of a grating using the subjective method.
At which wavelength does an LED emit light? The wavelength is ...
Because stray light cannot enter the LED on account of the tube, this experiment can also be carried out in daylight. In this experiment you will learn to record a characteristic and to interpret it.
What does ...
If the light is reflected by a glass pane it is polarised i.e. the degrees of freedom of the vibration are restricted and the wave then only vibrates in a single direction. If such polarised light falls onto a polarisation filter only allowing light t ...
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