Gravitational acceleration measuring and demonstrating device

• Main Authors: LI JINSONG, JIA HAOQIANG, ZHANG LEI, LI YAO, YANG JIN
• Format: Patent
• Language: Chinese; English
• Published: 19.02.2014
• Subjects: ADVERTISING; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE; CRYPTOGRAPHY; DIAGRAMS; DISPLAY; EDUCATION; EDUCATIONAL OR DEMONSTRATION APPLIANCES; GLOBES; PHYSICS; PLANETARIA; SEALS

The utility model discloses a gravitational acceleration measuring and demonstrating device. The gravitational acceleration measuring and demonstrating device comprises (a) a sphere of which the lower hemisphere is a solid body casted by a metal material, and the upper hemisphere is a hollow shell and is manufactured by an engineering plastic, wherein the lower hemisphere and the upper hemisphere hollow shell are connected via screw threads, and an acceleration measurement and bluetooth emission circuit is placed in the hollow shell; (b) a computer with a bluetooth function. When the gravitational acceleration measuring and demonstrating device demonstrates, the sphere is placed at a certain height, so that the sphere falls freely from a stationary state; while the sphere falls freely, the computer real-timely receives the acceleration numerical values transmitted by the bluetooth in the sphere and displays the numerical values on a screen. The beneficial effects of the utility model are that: the gravitation