Atmospheric pressure demonstrating device for physics teaching

Abstract

The invention discloses an atmospheric pressure demonstrating device for physics teaching. The atmospheric pressure demonstrating device comprises a shell, supporting legs and a transverse partition board, wherein supporting legs are fixedly arranged at the bottom of the shell via bolts in a mode of being mutually symmetrical; a gas conduit is inserted into one side of the top of the shell; a balloon sleeves the end, which is located within the shell, of the gas conduit; a first control valve is embedded into one side, away from the gas conduit, of the top of the shell; a water inlet pipe is inserted into the bottom of one side of the outer wall of the shell; a second control valve sleeves the side, close to the shell, of the outer wall of the water inlet pipe; the transverse partition board is fixedly arranged in the center of the inner wall of the shell via a bolt; and a ventilation pipe is inserted in the axis of the transverse partition board. According to the atmospheric pressuredemonstrating device for physics teaching, the shell is partitioned via the transverse partition board, so that a full process of atmospheric pressure demonstration can be completed by one shell, andchange of atmospheric pressure can be obviously demonstrated; therefore, students can be facilitated in learning and understanding.

Description

technical field [0001] The invention relates to the technical field of teaching demonstration teaching aids, in particular to an atmospheric pressure demonstration device for physics teaching. Background technique [0002] In the process of physics teaching, the teaching of most knowledge only stays in the introduction of concepts. For example, the concept of atmospheric pressure is difficult for students to understand. If the image of atmospheric pressure can be shown to students through demonstration teaching aids, it will be easier It is easy for students to understand, and the memory will be relatively deep, so the atmospheric pressure demonstration device is needed to demonstrate atmospheric phenomena, so as to deepen students' memory. [0003] 1. The existing atmospheric pressure demonstration device separates the steam generating device from the atmospheric pressure demonstration device, which increases the volume of the device and is inconvenient to move, and water v...

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Problems solved by technology

[0003] 1. The existing atmospheric pressure demonstration device separates the steam generating device from the atmospheric pressure demonstration device, which increases the volume of the device and is inconvenient to move, and it is not easy for water vapor to enter the atmospheric pressure demonstration device

[0004] 2. The existing atmospheric pressure demonstration device only transports water vapor to the interior of the atmospheric pressure demonstration device through a conduit, which reduces the delivery efficiency of water vapor, thereby making the water vapor content inside the atmospheric pressure demonstration device lower, so that the final balloon The change is not very obvious, so that the students can not observe the obvious demonstration effect

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