景符

景符

Boost
0
0
0

Print Profile(1)

All
P1S
P1P
X1
X1 Carbon
X1E
A1

0.2mm layer, 4 walls, 30% infill
0.2mm layer, 4 walls, 30% infill
Designer
1.6 h
1 plate

Open in Bambu Studio
Boost
0
0
0
0
1
0
Released

Description

古代天文仪器名。亦称影符。

preview

郭守敬研制成高表以后测影时,横梁的影子,投射在圭面上不十分清楚,这势必影响测量的精确度。为了观测的准确,郭守敬又创制了“景符”。

 

《元史·天文志》载:“景符之制,以铜叶,博二寸,加长博之二,中穿一窍,若针芥然,以润方为趺,一端设为机轴,可令开阖,稽其一端,使其势斜倚,北高南下,往来迁就于虚梁之中。窍达日光,仅如米许,隐然见横梁于其中。”

景符利用小孔成像原理,使高表横梁所投虚影成为精确实像,清晰地投射在圭面上,达到了人类测影史上的最高精度。

 

模型需要两颗m3*16螺丝固定转动轴。

Comment & Rating (0)

Please fill in your opinion
(0/5000)

No more

License

This user content is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.