Multifunctional column type sundial

A multi-functional, cylindrical technology, applied to mechanically driven clocks, instruments, etc., can solve problems such as students who cannot demonstrate intuitively, and achieve the effect of simple structure, good practicability, and convenient operation

Inactive Publication Date: 2008-06-11
XIANGMING MIDDLE SCHOOL SHANGHAI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many types of sundials, there is one type that uses the changes in the sun’s shadow of the sundial needle on the plane sundial surface to measure time, including equatorial, horizontal, meridional, mortal, oblique, and vertical. However, due to the lack of such teaching aids, there will be many difficulties in teaching, and it is impossible to demonstrate it intuitively to students. If we can design a time measurement method that can demonstrate the above various flat sundials, and can draw The sundial teaching aid that shows the sun's shadow on its sundial track and changes throughout the year will bring great convenience to teaching

Method used

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  • Multifunctional column type sundial
  • Multifunctional column type sundial
  • Multifunctional column type sundial

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Embodiment Construction

[0020] As shown in the figure, the present invention provides a multifunctional cylindrical sundial, which is composed of a sundial needle 1, a marking point 2, a sundial tile 3, an angle fixer 4, a hinge 5 and a bottom plate 6, and the bottom plate 6 is placed with The sundial tile 4 is connected by a hinge 5, an angle fixer 4 is installed between the sundial tile 3 and the bottom plate 6, a sundial pin 1 is installed on the sundial tile 3, and a marking point 2 is arranged on the sundial pin 1.

[0021] The teaching aid of the present invention can achieve the effect of simulating various sundial functions by fine-tuning the device according to requirements, and various forms are now described:

[0022] 1. Conventional cylindrical sundial:

[0023] After placing the device, the α angle between the sundial tile 3 and the bottom plate 6 is set to be the same as the latitude angle through the angle fixer 4, and the sundial pin 1 is aligned with the north celestial pole, as show...

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Abstract

The invention belongs to the field of a time measuring tool, in particular to multifunctional column type sundial, which comprises a dial pin (1), a signature point (2), a dial tile (3), an angle fixer (4), a gemel (5) and a soleplate (6). The teaching aid of the invention has simple structure and convenient operation; through adjustment of the device, various sundial types can be simulated, the difficulty of lacking teaching aids of the kind is solved and good practicality is realized.

Description

technical field [0001] The invention belongs to the field of time measuring tools, and in particular relates to a multifunctional cylindrical sundial. Background technique [0002] The sundial is an ancient timing tool that uses the angle change of the sun's shadow to measure time. It measures the time of day according to the angle change of the sun's shadow on the sundial. Today, it can be used to let young people learn astronomical knowledge and cultivate Three-dimensional space imagination ability and scientific experiment ability. Although there are many types of sundials, there is one type that uses the changes in the sun’s shadow of the sundial needle on the plane sundial surface to measure time, including equatorial, horizontal, meridional, mortal, oblique, and vertical. However, due to the lack of such teaching aids, there will be many difficulties in teaching, and it is impossible to demonstrate it intuitively to students. If we can design a time measurement method...

Claims

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Application Information

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IPC IPC(8): G04B49/02
Inventor王嘉琪王嘉瑶李捷于力黄曾新
OwnerXIANGMING MIDDLE SCHOOL SHANGHAI