File:Pendulum 1 (PSF).png

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摘要

描述
English: a body suspended from a fixed point so as to swing freely to and fro under the action of gravity and commonly used to regulate movements (as of clockwork)
日期
來源 Archives of Pearson Scott Foresman, donated to the Wikimedia Foundation
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作者 Pearson Scott Foresman
許可
(重用呢個檔案)
Public domain This work has been released into the public domain by its author, Pearson Scott Foresman. This applies worldwide.
In some countries this may not be legally possible; if so:
Pearson Scott Foresman grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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呢個作品經已獲得授權使用,授權證明已經過確認同存檔喺維基媒體嘅VRT系統入邊。
有VRT帳號嘅用戶可以喺ticket #2010061110041093搵到。若果需要確認授權資訊,請聯絡有VRTS帳號嘅用戶或者喺VRT通告板留低訊息。

Ticket連結: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom&TicketNumber=2010061110041093
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圖中顯示嘅係

28 3 2020

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現時2020年3月28號 (六) 04:31響2020年3月28號 (六) 04:31嘅縮圖版本1,152 × 967(38 KB)Encik TekatekiUploaded a work by Pearson from https://commons.wikimedia.org/wiki/File:PSF-P670005.png with UploadWizard

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