Description

CONSTITUTE:
This instrument is composed of a demonstrator, a scraper, a squeeze trigger and other parts.
The demonstrator is composed of two lead posts with hooks, the scraper is composed of a plastic bracket and a blade, the scraper is composed of a plastic bracket and a blade, and the squeezing trigger is composed of a bracket and a screw.

INSTRUCTIONS:
1. Put the lead column into the scraper and rotate it clockwise slightly and evenly to expose the new lead body.
2. Butt the two lead pillars and put them in the bracket, and move the screw to make the two end faces of the lead pillars precisely combine.
3. Hang the demonstrator on the stand, and hang an appropriate amount of weight on the hook at the lower end.
4. During the demonstration, a plate of sand can be placed at the bottom to accept heavy objects dropped due to carelessness in the experiment.
Experiments have proved that there is a gravitational force between solid molecules, and this gravitational force is larger when the molecular distance is small.