File:Прибор Шварцкопфа.JPG

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Прибор_Шварцкопфа.JPG ‎(255 × 501 pixels, file size: 52 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
Русский: Тепловой пожарный извещатель конструкции XIX века. Состоит из двух проволок a и b, которые соединяются между собой шайбами cc из материала, не проводящего электричества. Сбоку прибора устроена трубочка d с капсулем e, наполненным ртутью и закрываемый снизу пластиной из воска. При повышении температуры воск плавится, ртуть выливается в прибор и устанавливается контакт между двумя проволоками, вследствии чего появляется сигнал
Date
Source Пресс А.А. Общедоступное руководство по борьбе с огнем СПб., 1893 С.114
Author Пресс, Алексей Александрович

Licensing

[edit]
Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

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 a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

File history

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

Date/TimeThumbnailDimensionsUserComment
current09:19, 22 November 2009Thumbnail for version as of 09:19, 22 November 2009255 × 501 (52 KB)Georg Pik (talk | contribs){{Information |Description={{ru|1=Тепловой пожарный извещатель конструкции XIX века}} |Source=Пресс А.А. Общедоступное руководство по борьбе с огнем СПб., 1893 С.114

You cannot overwrite this file.

There are no pages that use 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:Прибор_Шварцкопфа.JPG&oldid=461031849"