Principle
In this experiment the students will become acquainted with a
procedure for the construction of an image of a given object by a
concave mirror. Selected light beams and their characteristic paths
are used. The experiment is demanding on the students'
capabilities and experimental proficiency. However, with
an accurate adjustment and performance of the
experiment it can result in tremendous gains in
the students' insights; particularly if corresponding
experimental demonstrations with the optical bench are performed
complementarily.
With this experiment the character of physical experiments in
general can be clearly demonstrated: by carefully selecting the
experimental conditions (object, distance, object size, focal
length) one obtains results with new information
content.
On the one hand, physical conformities to natural laws
can be derived by varying the conditions; on the other hand, an
inverse, deductive method can also be applied. The formation
of images with the aid of selected light beams and the subsequent
experimental testing allow for a large amount of leeway for an
interesting and exciting organisation of your class. This
experiment also clearly illustrates the role of mathematics
(geometric construction) in acquiring knowledge of physical
phenomena.
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
Why is the reflected image in a polished spoon inverted and reduced? In this experiment the image formation in a concave mirror is investigated with selected light beams.



