A kind of gravity acceleration measurement demonstration device and demonstration method
A technology of gravitational acceleration and demonstration device, applied in the field of physical teaching demonstration appliances, can solve the problem of lack of gravitational acceleration measurement demonstration appliances, etc., and achieve the effect of improving teaching quality
Active Publication Date: 2015-09-30
嘉兴舒居纺织有限公司
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[0003] The purpose of the present invention is to solve the technical problem of the lack of gravitational acceleration measurement and demonstration tools in physics classroom teaching, and to provide an instrument device that can be used for gravitational acceleration measurement and demonstration in high school and university physics classroom teaching
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[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0022] The sphere structure of the present invention is shown as attached figure 1 , 2 . During implementation, the diameter of the sphere can be 6-8cm; the lower hemisphere 1 is a solid body, cast with cast iron, cast steel, zinc, lead and other metal materials, and the surface is polished; the upper hemisphere hollow shell 2 is made of engineering plastics, and the shell thickness is 4mm , preferably transparent engineering plastics, so that the internal measurement transmitter circuit 3 can be seen from the outside. Measure the thickness of the rubber shock-absorbing pad 4 placed under the transmitting circuit 3 to be 5 mm.
[0023] attached image 3 Is the electrical principle block diagram of the present invention. During implementation, the acceleration sensor in the measurement transmitter circuit 3 can adopt the single-axis acceleration sensor AD...
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The invention discloses a gravitational acceleration measurement demonstration device and method. The device comprises a ball and a computer with the bluetooth function, wherein a lower half ball body is a solid body made of metal materials through casting, the upper half ball body is a hollow shell body which is made of engineering plastic, the lower half ball body is connected with the hollow shell body through threads, and an acceleration measurement and bluetooth transmitting circuit is arranged in the hollow shell body. When demonstration is conducted, the ball is placed at a certain height, the ball is made to fall freely from a static state, and the computer receives an acceleration numerical value transmitted through bluetooth from the inner portion of the ball in real time and displays the acceleration numerical value through a screen while the ball freely falls. The gravitational acceleration measurement demonstration device and method have the advantages that the magnitude of the gravitational acceleration in the falling process of a freely falling body can be visually and conveniently demonstrated in physics lesson classroom teaching, students can easily master the physical conception of the gravitational acceleration, and the teaching quality is improved.
Description
technical field [0001] The invention relates to a physics teaching demonstration tool, in particular to a gravity acceleration measurement demonstration device. Background technique [0002] Gravitational acceleration is an important physical concept and physical quantity. The gravitational acceleration measurement experiment is a physical experiment that high schools and universities must do. At present, the experimental methods are: electromagnetic dot timer method, single pendulum method, free fall (photoelectric gate) method, etc. In the experiment, it is necessary to measure the distance, time and other related physical quantities, and then calculate the value of the acceleration of gravity according to the relevant formula. The experimental process is complicated and the error is large, so it is not suitable for demonstration experiments in physics classroom teaching. Contents of the invention [0003] The purpose of the present invention is to solve the technical pr...
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IPC IPC(8): G09B23/10
Inventor 李耀杨进章磊李劲松贾浩强
Owner 嘉兴舒居纺织有限公司