Dotting timer used for physical experiment

Abstract

The invention discloses a dotting timer used for a physical experiment, and relates to the technical field of physical experiments. The dotting timer used for the physical experiment comprises a base,wherein the front surface of the base is independently provided with a driving mechanism, a paper slip rail, a main switch and a control mechanism; and the front surface of the driving mechanism is independently provided with a first indicator light and a second indicator light. Through the dotting timer used for the physical experiment, through the improvement of the driving mechanism and the paper slip rail, the use of digital equipment can be greatly improved, so that a situation that measurement accuracy is lowered (for a transmission rate, the digital equipment needs to switch a signal between a digital signal and an analog signal, so that more digital equipment is used for relatively lowering a signal transmission rate, and therefore, measurement accuracy is lowered) since parts ofdigital equipment ages can be avoided, a lateral buffer space is provided for a metal needle through the improvement of a buffer mechanism, and a situation that the metal needle stretches a paper slipdue to high measurement speed is avoided.

Description

technical field [0001] The invention relates to the technical field of physical experiments, in particular to a ticking timer for physical experiments. Background technique [0002] A dot timer is a tool for measuring short periods of time. If the paper tape driven by the moving object passes through the dot timer, the dots on the paper tape will record the time of the object's movement, and the points on the paper tape will also show the position of the moving object at different times. By studying the intervals between the points on the tape, the frequency of motion of the object can be analyzed. [0003] The invention of the existing application number CN201710456400.7 discloses a digital tick timer. [0004] Although this invention solves some problems, there are still following problems to be solved when in use: [0005] 1. This invention uses more digital equipment, so it is prone to decrease in measurement accuracy due to the aging of some digital equipment (in ter...

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Problems solved by technology

[0009] Aiming at the deficiencies of the prior art, the present invention provides a dotting timer for physical experiments, which solves the problem that in the prior art, more digital equipment is used, so it is prone to decrease in measurement accuracy due to the aging of some digital equipment. (In terms of transmission rate, digital equipment needs to convert signals between digital signals and analog signals, so the use of more digital equipment will relatively reduce the rate of signal transmission, thereby reducing the measurement accuracy), and it is easy to appear due to measurement The metal needle stretches the paper strip due to the high speed, which makes it difficult to measure the distance between the holes

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