Handheld Stroboscope

Handheld Stroboscope

Gelsonlab HSPO-028 Optical Instrument Handheld Stroboscope 

                                           
Purpose: Handheld Stroboscope is used in the experiment of scientific stroboscopic observation in primary and secondary schools to prove that vision has the characteristics of persistence.
Structure: the aluminum disc with a diameter of about 200 mm is sprayed with matte black plastic on the front and back of the surface, with a thickness of about 1 mm.
A 60 mm long and 1.8 mm wide through gap is opened every 30 ° at the center angle. There are 12 through gaps in total.
A supporting shaft and a 90 ° straight handle are installed in the center of the disc, and a nut is arranged at the end of the shaft, so that the disc does not come out. The disc can be rotated by hand around the central axis.
Usage: screw out the support shaft nut, insert it into the center hole of the disc, screw on the nut, hold the handle end and turn the disc with one hand,
The inertia rotation can be generated by using the hand dialing disc. The circle piece is parallel to the scene to be observed, and the distance between the eyes and the circle piece is 20-30cm,
You can see the scenery through the stroboscopic disc. The circle piece can only see the scene piece of the size of the slit through the slit;
When the rotation speed is slow, the scene is full scene, but there is flickering black shadow; when the rotation speed is fast, the panorama without black shadow can be seen,
When the rotation speed of slit is consistent with the visual retention time, or faster than the visual retention time,
The slits form a transparent ring in the vision, and the scene you see is coherent without flickering black shadow.

matters needing attention:

1. Move the disc to apply the force in the tangent direction;

2. Do not press heavily when placing to avoid deformation of the disc.