The back of the lens is frosted and inlaid with a magnetic sheet, which can be adsorbed on a magnetic blackboard to facilitate the on-board demonstration of the class.
The prism is a smooth lens except the back.
Each prism, power supply, and optical path offset table are all magnetic.
The demonstration in class is more convenient and intuitive.
Optical offset table, containing magnetic, the light source shifts through the prism, can observe the angle through this table
Semicircular groove, non-magnetic.
It is used to observe the deviation of light in water, fill it with water, and let the light pass through the mirror to observe the shift of light.
There are three kinds of light sources, namely a beam of light, three beams of light, and five beams of light.
You can choose according to your needs.
The above figure shows the offset of the light passing through the concave lens.
