File:Le Roy escapement mechanism.jpg

Le_Roy_escapement_mechanism.jpg (646 × 528 pixels, file size: 59 KB, MIME type: image/jpeg)

Summary

Description
English: Le_Roy_escapement_mechanism
Date
Source [1]
Author
Ferdinand Berthoud (1727–1807)  wikidata:Q124411 s:it:Autore:Ferdinand Berthoud
 
Ferdinand Berthoud
Alternative names
F. Berthoud; Berthoud
Description German-French clockmaker and scientist
Date of birth/death 18 March 1727 Edit this at Wikidata 20 June 1807 Edit this at Wikidata
Location of birth/death Plancemont-sur-Couvet, Canton of Neuchâtel Groslay, French Empire
Work location
Paris Edit this at Wikidata
Authority file
creator QS:P170,Q124411

Licensing

This is a faithful photographic reproduction of a two-dimensional, public domain work of art. The work of art itself is in the public domain for the following reason:
Public domain

The author died in 1807, so 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 100 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1931.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
The official position taken by the Wikimedia Foundation is that "faithful reproductions of two-dimensional public domain works of art are public domain".
This photographic reproduction is therefore also considered to be in the public domain in the United States. In other jurisdictions, re-use of this content may be restricted; see Reuse of PD-Art photographs for details.

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copyright status

public domain

inception

1802

data size

60,724 byte

height

528 pixel

width

646 pixel

media type

image/jpeg

checksum

1e849a4eea922401aee1d356233458cc6886686f

determination method or standard: SHA-1

File history

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Date/TimeThumbnailDimensionsUserComment
current10:12, 20 December 2009Thumbnail for version as of 10:12, 20 December 2009646 × 528 (59 KB)World Imagingbetter
20:32, 19 December 2009Thumbnail for version as of 20:32, 19 December 2009413 × 505 (49 KB)World Imaging{{Information |Description={{en|1=Le_Roy_escapement_mechanism}} |Source=[http://books.google.com/books?id=ch4JAAAAIAAJ&pg=PA1] |Author=Ferdinand Berthoud |Date=1802 |Permission= |other_versions= }} Category:Chronometer

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allikas: https://en.wikipedia.org/wiki/File:Le_Roy_escapement_mechanism.jpg