Wikimedia Commons

File:NLC404-01J002927-62768 電信 1931年2卷1期.pdf

Go to page
next page →
next page →
next page →

Original file ‎(1,535 × 2,143 pixels, file size: 5.58 MB, MIME type: application/pdf, 223 pages)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

edit
電信   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Author
交通部電信學校委員會
image of artwork listed in title parameter on this page
Title
電信
Volume 1931年2卷1期
Publisher
交通部電信學校委員會
Description

本刊系交通部電信學校校刊 原件有污跡

插圖
本校成立五十年紀念來賓校友及教職員學生合影
題詞
編輯前言
通論
電信學校之使命
電界同人應有之努力
學電信的人今後應有的覺悟和努力
我國電政將來發展方案之研究
交通部電政最近之設施及其整頓計劃
電信機械製造廠擴充計畫草案
學生應具有研究之精神
電務員應有之認識
國音電報運動的回顧
專論
短波天線之測驗
電波之傳播現象
克利特收報機之構造與整理
論上海租界電話
上海電話局之長途交通
自動電話與非自動式通話之研究
一個三極真空管之研究
短波回授電路收音機之構造
蓄電池之疾病及療治法
蓄電瓶之特性
安放過河電纜要志
水線發生障礙時候的大概情形
漢口電報局收發之今昔
波紋收報機
年紅電光之原理及構造
三極真空管接收機之障礙及整理
珠算開方術
地理教授法之商榷
對於電政之兩種貢獻
學生徵文當選
電報加價之商榷
試就所見電政積弊及擬具改革方法
校務報告
大事記
各種表格
本校成立五十年紀念附刊
補白
電報總況調查之一
電報總況調查之二
電報局所比較
電局用機比較
部辦電話局用戶比較
往來國內船舶噸數
郵政總況之一
郵政總況之二
長途電話通話次數表
無線電報職工統計
郵政儲金總況
內河航路
長途電話收入
長途電話支出
郵件包裹匯兌指數表
往來國內船舶噸數

Language Chinese
Publication date 1930~1931
Source
institution QS:P195,Q732353
(民國時期文獻 民國期刊)
館藏信息
InfoField
557.705

Licensing

edit
This image is in the public domain because it is a mere mechanical scan or photocopy of a public domain original, or – from the available evidence – is so similar to such a scan or photocopy that no copyright protection can be expected to arise. The original itself is in the public domain for the following reason:
Public domain
This image is now in the public domain in China because its term of copyright has expired.

According to copyright laws of the People's Republic of China (with legal jurisdiction in the mainland only, excluding Hong Kong and Macao), amended November 11, 2020, Works of legal persons or organizations without legal personality, or service works, or audiovisual works, enter the public domain 50 years after they were first published, or if unpublished 50 years from creation. For photography works of natural persons whose copyright protection period expires before June 1, 2021 belong to the public domain. All other works of natural persons enter the public domain 50 years after the death of the creator.
According to copyright laws of Republic of China (currently with jurisdiction in Taiwan, Penghu, Kinmen, Matsu, etc.), all photographs and cinematographic works, and all works whose copyright holder is a juristic person, enter the public domain 50 years after they were first published, or if unpublished 50 years from creation, and all other applicable works enter the public domain 50 years after the death of the creator.

Important note: Works of foreign (non-U.S.) origin must be out of copyright or freely licensed in both their home country and the United States in order to be accepted on Commons. Works of Chinese origin that have entered the public domain in the U.S. due to certain circumstances (such as publication in noncompliance with U.S. copyright formalities) may have had their U.S. copyright restored under the Uruguay Round Agreements Act (URAA) if the work was under copyright in its country of origin on the date that the URAA took effect in that country. (For the People's Republic of China, the URAA took effect on January 1, 1996. For the Republic of China (ROC), the URAA took effect on January 1, 2002.[1])
To uploader: Please provide where the image was first published and who created it or held its copyright.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.

čeština ∙ Deutsch ∙ English ∙ português ∙ română ∙ slovenščina ∙ Tagalog ∙ Tiếng Việt ∙ македонски ∙ русский ∙ മലയാളം ∙ ไทย ∙ 한국어 ∙ 日本語 ∙ 简体中文‎ ∙ 繁體中文 ∙ +/−


This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.

Note: This tag applies to scans and photocopies only. For photographs of public domain originals taken from afar, {{PD-Art}} may be applicable. See Commons:When to use the PD-Art tag.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current02:29, 22 August 2022Thumbnail for version as of 02:29, 22 August 20221,535 × 2,143, 223 pages (5.58 MB)PencakeBot (talk | contribs)Upload 電信 1931年2卷1期 (3/4) by 交通部電信學校委員會 (batch task; nlc:data_404,01J002927,62768; 民國期刊.9; 電信)

You cannot overwrite this file.

The following page uses this file:

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:NLC404-01J002927-62768_電信_1931年2卷1期.pdf&oldid=703609975"