Mercator map projection demonstration device and demonstration method

A map projection and demonstration device technology, which is applied to maps/plans/charts, planetariums/globes, instruments, etc., can solve problems such as poor teaching effects, and achieve the effects of improving teaching effects, convenient material collection, and simple design and production

Inactive Publication Date: 2016-06-01
XIAN UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0003] In order to enhance the intuition, vividness and interest of map projection teaching and solve the problem of poor teaching effect, the present invention provides a Mercator map projection demonstration device and method, using the device to demonstr

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  • Mercator map projection demonstration device and demonstration method
  • Mercator map projection demonstration device and demonstration method
  • Mercator map projection demonstration device and demonstration method

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Embodiment Construction

[0017] The technical solutions of the present invention will now be further described in conjunction with the drawings and embodiments, but the present invention is not limited to the following implementation situations.

[0018] Such as Figure 1~3 As shown, the Mercator map projection demonstration device of this embodiment is composed of a base 1 , a transparent paper cover 2 , a light bulb 3 and a globe main body 4 .

[0019] Wherein, base 1 is common desk lamp base 1, and bulb 3 is installed on base 1, and globe main body 4 is also installed outside bulb 3, and bulb 3 is positioned at the center of inner cavity of globe main body 4, and globe main body 4 of the present embodiment It is composed of a simple globe frame that is lapped by thin iron wires to form a spherical network structure and a polyester film with good light transmission covering the globe frame. The bottom of the globe frame is fixed on the base 1, and the top is fixed with pins. Fastening, its specific...

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Abstract

The invention relates to a Mercator map projection demonstration device and a demonstration method. The demonstration device comprises a base, a bulb and a light-transmitting globe main body, wherein the bulb and the light-transmitting globe main body are arranged on the base. The bulb is arranged at the place of a globe center of the globe main body; the outer surface of the globe main body is marked with a deformation verification triangle, longitude and latitude lines and an equator; the globe main body is externally covered by a transparent map paper cover; the transparent map paper cover is cylinder in shape, and the center shaft thereof is overlapped with the earth axis of the globe main body; and the diameter of the transparent map paper cover is equal to the diameter of the equator of the globe main body, and the height of the transparent map paper cover is equal to the earth axis of the globe main body. The Mercator map projection process is demonstrated visually through a simple method, and meanwhile, the deformation verification triangle and a length verification line are utilized to demonstrate the deformation property of Mercator map projection vividly; and the demonstration device is convenient to get materials and easy to produce, can enable the abstract theory teaching to become visual and vivid, and greatly improves teaching effect of cartography.

Description

technical field [0001] The invention belongs to the technical field of teaching demonstration tools for colleges and universities, and in particular relates to a Mercator map projection demonstration device and a demonstration method. technical background [0002] Maps, as a way of human image thinking and the second language of geography, have a long history and are still in the ascendant. Since the earth is an irregular sphere, in order to express the natural and human elements on the surface on a plane, it is necessary to use a map projection. However, there is no perfect map projection until now, because the ellipsoid of the earth is A non-developable surface must have area, length, and angle deformation during the map projection process. In front-line teaching, formula derivation or slide presentation is often used for map projection teaching, but the effect is not very satisfactory, because the theory here is more complicated and the process is more abstract, which is...

Claims

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Application Information

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IPC IPC(8): G09B27/08G09B29/00
CPCG09B27/08G09B29/003
Inventor 郭斌
Owner XIAN UNIV OF SCI & TECH
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