CN211604489U - Netted static ball-jumping experimental instrument - Google Patents

Abstract

The utility model provides a netted static ball laboratory glassware that jumps, mainly includes static high voltage power supply, transparent square box, metal mesh, aluminium foil ball, characterized by: the transparent square box is a transparent plastic insulating square box, the aluminum foil ball is a ball made of aluminum foil, the metal mesh is respectively fixed on the inner bottom surface of the transparent square box and the inner bottom surface of the upper cover of the transparent square box, two holes are punched on the side wall of the transparent square box close to the upper bottom surface and the lower bottom surface, the insulating sheath wires respectively penetrate through the two holes, and a section of the wire with the insulating sheath removed is leaked to be connected with the metal mesh on the inner bottom surface in the transparent square box, so that the metal mesh on the inner bottom surface of the upper cover is contacted with the sheath insulating wires after the upper cover of the transparent square box is covered. Its unique character of this patent is, replaces metal sheet electrode in the past with the metal mesh, can follow each angle observation static and jump the ball phenomenon, and the reinforcing is extremely simple and easy to make to understanding and the understanding of electrostatic induction and coulomb's power, and the effect is obvious, promotes in the teaching and can increase more educational functions.

Description

Netted static ball-jumping experimental instrument

Technical Field

The patent relates to a presentation device of static ball that jumps belongs to the physics experiment field.

Background

Static electricity is an important content in college physics, and an electrostatic bouncing ball experimental instrument is usually used for demonstrating an experimental instrument for the problems of static induction and static electricity, an upper electrode plate and a lower electrode plate of the electrostatic bouncing ball are metal plates, but observation can be only carried out from the side surface of the device, the observation direction is single, the phenomenon that the metal ball in the electrostatic bouncing ball is in contact with the electrode plates (or is close to the electrodes) and discharges is inconvenient to observe, the experimental device demonstration which is clearly observed from multiple directions and has low cost is lacked, and the problem needs to be solved in order to cultivate exploration and practice capacity of students. The method is completed under the support of national natural fund projects (project number: 11405092), basic business charge scientific research projects (project number: 135209251) of high schools belonging to provinces of Heilongjiang province and teaching, modification and application projects (project number: SJGY20170385) of the high schools belonging to the Heilongjiang province.

Disclosure of Invention

The patent is a demonstration experimental instrument for solving the problem of electrostatic bouncing, and emphasizes on solving the problem of replacing the prior metal plate with a metal net.

This patent technical scheme: the utility model provides a netted static ball laboratory glassware that jumps, mainly includes static high voltage power supply, switch, transparent square box, metal mesh, aluminium foil ball, characterized by: the transparent square box is a transparent plastic insulating square box (a culture dish square box made of insulating plastic materials and provided with an upper cover), the aluminum foil ball is a ball made of aluminum foil (aluminum foil paper for barbecue), and the metal mesh is a latticed mesh woven by metal wires; the method comprises the steps of fixing metal nets on the inner bottom surface of a transparent square box and the inner bottom surface of an upper cover of the transparent square box respectively, placing an aluminum foil ball into the transparent square box, punching two holes on the side wall, close to the upper bottom surface and the lower bottom surface, of the transparent square box, enabling an insulated sheath wire to penetrate through the two holes respectively, leaking a section of wire without the insulated sheath, enabling the wire to be connected (fixed) with the metal nets on the inner bottom surface of the transparent square box, and enabling the metal nets on the inner bottom surface of the upper cover to be in contact with the insulated sheath wire (enabling a high-voltage direct-current power supply to supply power to the upper metal nets and the lower metal nets in the transparent square box.

During demonstration, the transparent square box is placed on the horizontal desktop, a power switch is switched on, power is supplied to the upper metal net and the lower metal net in the transparent square box, and the aluminum foil ball can jump back and forth between the upper metal net and the lower metal net and is accompanied with a lightning phenomenon; when the voltage output by the high-voltage direct-current power supply is increased, the jump frequency of the aluminum foil ball is increased, and the lightning brightness is enhanced; after the power is turned off, the aluminum foil ball then jumps several times to stop jumping.

Its unique place of this patent is different with current experiment, replaces the technique of metal sheet as the electrode in the past with the metal mesh, can follow each angle and observe the static ball phenomenon of jumping, most can only observe the static ball phenomenon of jumping from the side in the past, can also see simultaneously that the metal ball jumps and the easy contact of the position of metal mesh, the reinforcing is to the understanding and the understanding of electrostatic induction and coulomb's power, and the preparation is extremely simple and easy, and the effect is obvious, promotes in the teaching and can increase more educational functions.

Drawings

FIG. 1 is a schematic structural diagram of the patent,

wherein, 1, electrostatic high voltage power supply, 2, transparent square box, 3, metal net, 4, aluminum foil ball

Detailed Description

As shown in the attached figure 1: mainly include static high voltage power supply 1, switch, transparent square box 2, metal mesh 3, aluminium foil ball 4, characterized by: the transparent square box 2 is a transparent plastic insulating square box (a culture dish square box made of insulating plastic materials and provided with an upper cover), the aluminum foil ball 4 is a ball made of aluminum foil (aluminum foil paper for barbecue), and the metal net 3 is a latticed net woven by metal wires; the metal net 3 is respectively fixed on the inner bottom surface of the transparent square box 2 and the inner bottom surface of the upper cover of the transparent square box 2, the aluminum foil ball 4 is placed in the transparent square box 2, two holes are punched on the side wall of the transparent square box 2 close to the upper bottom surface and the lower bottom surface, the insulated wrapping wire respectively passes through the two holes, a section of wire with the insulated wrapping removed is leaked, the wire is connected (fixed) with the metal net 3 on the inner bottom surface of the transparent square box 2, and the metal net 3 on the inner bottom surface of the upper cover is in contact with the insulated wrapping wire after the upper cover of the transparent square box 2 is covered (the upper metal net 3 and the lower metal net 3 in the transparent square box 2 are ensured to be supplied with power by the high-voltage.

During demonstration, the transparent square box 2 is placed on a horizontal desktop, a power switch is switched on, power is supplied to the upper metal net 3 and the lower metal net 3 in the transparent square box 2, and the aluminum foil ball 4 can be seen to jump back and forth between the upper metal net 3 and the lower metal net 3 and simultaneously accompanied with a lightning phenomenon; when the voltage output by the high-voltage direct-current power supply 1 is increased, the jump frequency of the aluminum foil ball 4 is increased, and the lightning brightness is enhanced; after the power is turned off, the aluminum foil ball 4 then jumps several times to stop jumping.

Claims (1)

1. The utility model provides a netted static ball laboratory glassware that jumps, includes static high voltage power supply (1), switch, transparent square box (2), metal mesh (3), aluminium foil ball (4), characterized by: the transparent square box (2) is a transparent plastic insulating square box, the aluminum foil ball (4) is a ball made of aluminum foil, and the metal net (3) is a latticed net woven by metal wires; the metal net (3) is respectively fixed on the inner bottom surface of the transparent square box (2) and the inner bottom surface of the upper cover of the transparent square box (2), the aluminum foil ball (4) is positioned in the transparent square box (2), two holes are formed in the side wall, close to the upper bottom surface and the lower bottom surface, of the transparent square box (2), the insulated wires respectively penetrate through the two holes and are connected with the metal net (3) in the transparent square box (2), and after the upper cover of the transparent square box (2) is covered, the metal net (3) on the inner bottom surface of the upper cover is in contact with the insulated wires.

Images