CN201681519U

CN201681519U - Multi-functional stationery board

Info

Publication number: CN201681519U
Application number: CN2010200328812U
Authority: CN
Inventors: 黄山上
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-01-08
Filing date: 2010-01-08
Publication date: 2010-12-22
Anticipated expiration: 2020-01-08

Abstract

The utility model relates to a stationery board, in particular to a multi-functional stationery board for observing or drawing the motion track of a charged particle in a uniform magnetic field. The stationery board comprises a transparent board body, and is characterized in that: the board body is provided with a small hole O and a circle K, the center of the circle K is the small hole O, the board body is also provided with small holes A, B, C and D, which are positioned on the arc of the circle K to divide the circle K into four quarters, and tangents E, F and G to the circle K are respectively arranged at the small holes B, C and D. Since the board body is provided with the small hole O and the circle K and the circle K is provided with the small holes A, B, C and D and the tangents E, F and G, the velocity direction and the motion track of the charged particle are objectified, and since the board body is transparent, an examinee can conveniently carry out observation and think; since the small holes are positioned on the important parts of the circle, the examinee can conveniently utilize the knowledge of geometry to draw a circle, and thereby the stationery board can help the examinee to observe or draw the motion track of the charged particle in the uniform magnetic field.

Description

A kind of multi-functional stationery plate

Technical field

The utility model relates to a kind of stationery, especially relates to a kind of multi-functional stationery plate of charged particle at the movement locus of uniform magnetic field that be used for observing or drawing.

Background technology

At senior high school period, in physics subject an important content about the knowledge in magnetic field, close the examination paper that charged particle moves and in college entrance examination, also have in uniform magnetic field through regular meeting.The key of separating this class exercise question is to draw the movement locus of charged particle in magnetic field, the resourceful student of some minorities directly imagine in the brain charged particle in magnetic field moving image and have the speed of solving problem faster, but for most student, all need the movement locus of charged particle is drawn just on paper and can solve a problem.Common way is to conclude summary then with the compasses track that draws one by one, but because the test time is general more limited, this way obviously can influence the topic speed of doing when taking an examination.Charged particle is made uniform circular motion in uniform magnetic field, therefore, also the someone utilizes coin to simulate the movement locus of charged particle, but because coin is opaque, observation when being unfavorable for mapping and thinking, add naked eyes and be difficult to determine its tangential direction, therefore, there is bigger limitation in the movement locus that uses coin to draw charged particle.The multifunctional ruler of existing picture usefulness offers the circle that hollows out and form in it, its picture principle is identical with coin, because the tangent line indication is not arranged, can't draw the movement locus of charged particle in uniform magnetic field.

Summary of the invention

The utility model provides a kind of multi-functional stationery plate of charged particle at the movement locus of uniform magnetic field that be used for observing or drawing; Solved the problem that the simple dependence multifunctional ruler that exists in the prior art can't draw charged particle movement locus in uniform magnetic field.

Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: a kind of multi-functional stationery plate, comprise transparent plate body, it is characterized in that: described plate body is provided with pore O and circle K, and circle K is the center of circle with pore O, on plate body, also be provided with pore A, B, C, D, described pore A, B, C, D are positioned on the circular arc of round K and a circle K and are divided into quarter, are provided with tangent line E, F, the G of round K at pore B, C, D place.By pore O and circle K are set on plate body, circle being provided with pore A, B, C, D and tangent line E, F, G on the K, and with the movement locus visualize of the velocity reversal and the particle of charged particle, and plate body is transparent, makes things convenient for the examinee to observe and thinks deeply; Pore is that the design that hollows out makes things convenient for the examinee to point with the finger or gesticulate with pen, several pores are positioned at round significant points, make things convenient for the examinee to utilize geometric knowledge to draw circle, help the examinee to observe or the drafting movement locus of charged particle in uniform magnetic field and the range of movement of charged particle, improve the speed of solving problem.

Be provided with scale mark H between described pore O and pore A, B, C, the D.Determine diameter of a circle when helping drawing.

Distance between described pore O and the pore A is 1 centimetre or 1.5 centimetres.The distance of pore O and pore A can be set to 1 centimetre, also can be set to 1.5 centimetres, certainly, for easy to use, also can be arranged on the pore of two kinds of length on the same plate body.

Described plate body is triangle, rectangle or semicircle.Plate body can be a set square, or ruler, also can be protractor, in conjunction with top structure, accomplishes the function of one-object-many-purposes.Also can do plate body greatly,, make the teaching aid that the teacher uses amplifying about 6 times on the basis of common set square.

Therefore, the utility model has following characteristics compared to existing technology: 1. simple in structure, reasonable in design; 2. by pore O and circle K are set on plate body, on the circle K pore A, B, C, D and tangent line E, F, G are set, with the movement locus visualize of the velocity reversal and the particle of charged particle, make things convenient for the examinee to observe or draw the movement locus of charged particle in uniform magnetic field, improve the speed of solving problem.

Description of drawings

Accompanying drawing 1 is a kind of structural representation of the present utility model;

Accompanying drawing 2 is another kind of structural representations of the present utility model.

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment 1: see Fig. 1, a kind of multi-functional stationery plate comprises transparent plate body 1, and plate body 1 is a set square, and certainly, plate body also can be a ruler or a protractor.Be provided with pore O and circle K on plate body 1, and circle K is the center of circle with pore O, also is provided with pore A, B, C, D on plate body 1, pore A, B, C, D are positioned on the circular arc of round K and a circle K and are divided into quarter, are provided with tangent line E, F, the G of round K at pore B, C, D place.Be provided with scale mark H between pore O and pore A, B, C, the D.Distance between pore O and the pore A is 1.5 centimetres.Circle K and tangent line E, F, G can be the forms of line, also can be arranged to the less groove of width.By pore O and circle K are set on plate body, circle being provided with pore A, B, C, D and tangent line E, F, G on the K, and with the movement locus visualize of the velocity reversal and the particle of charged particle, and plate body is transparent, makes things convenient for the examinee to observe and thinks deeply; Pore is that the design that hollows out makes things convenient for the examinee to point with the finger or gesticulate with pen, several pores are positioned at round significant points, make things convenient for the examinee to utilize geometric knowledge to draw circle, help the examinee to observe or the drafting movement locus of charged particle in uniform magnetic field and the range of movement of charged particle, improve the speed of solving problem.

Embodiment 2: see Fig. 2, on plate body 1, also be provided with pore O ' and circle K ', and circle K ' is the center of circle with pore O ', on plate body 1, also be provided with pore A ', B ', C ', D ', pore A ', B ', C ', D ' are positioned on the circular arc of round K ' and a circle K ' and are divided into quarter, locate to be provided with tangent line E ', F ', the G ' of round K ' at pore B ', C ', D '.Be provided with scale mark H ' between pore O ' and pore A ', B ', C ', the D '.Distance between pore O ' and the pore A ' is 1 centimetre.Remainder is identical with embodiment 1.The pore of two kinds of length is arranged on the same plate body, great circle generally is used for mapping when the charged particle track needs fine description, play and amplify the track effect, can not only help the distinct thinking of solving a problem of examinee, make other required geometric figures of examination paper within it but also be convenient to the examinee.Roundlet is used for general mapping, helps the distinct thinking of solving a problem of examinee, saves foul papers and picture time.

It is apparent to one skilled in the art that the utility model can be changed into multiple mode, and such change is not thought and broken away from scope of the present utility model.What all were such will be included within the scope of this claim the conspicuous modification of described those skilled in the art.

Claims

1. multi-functional stationery plate, comprise transparent plate body, it is characterized in that: described plate body is provided with first pore (O) and circle (K), and circle (K) is the center of circle with first pore (O), on plate body, also be provided with second pore (A), the 3rd pore (B), the 4th pore (C), the 5th pore (D), described second pore (A), the 3rd pore (B), the 4th pore (C), the 5th pore (D) is positioned on the circular arc of justifying (K) and circle (K) and is divided into quarter, at the 3rd pore (B), the 4th pore (C), the 5th pore (D) locates to be provided with first tangent line (E) of circle (K), second tangent line (F), the 3rd tangent line (G).

2. multi-functional stationery plate according to claim 1 is characterized in that: be provided with scale mark (H) between described first pore (O) and second pore (A), the 3rd pore (B), the 4th pore (C), the 5th pore (D).

3. multi-functional stationery plate according to claim 1 and 2 is characterized in that: the distance between described first pore (O) and second pore (A) is 1 centimetre or 1.5 centimetres.

4. multi-functional stationery plate according to claim 1 is characterized in that: described plate body is triangle, rectangle or semicircle.