File:Ladd Observatory micrometer.tiff

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Original file(4,648 × 2,756 pixels, file size: 12.25 MB, MIME type: image/tiff)

Summary

Photographer
English:
institution QS:P195,Q6469295
work for hire
Description
English: A biflar micrometer on the 12" aperture refracting telescope at Ladd Observatory, Brown University
Depicted place
English: Ladd Observatory
Date before 1896
date QS:P571,+1896-00-00T00:00:00Z/7,P1326,+1896-00-00T00:00:00Z/9
English:
institution QS:P195,Q22341583
Current location
English: From the special collections of the John Hay Library
Accession number
English: Plate #12 from Ladd Observatory records
Source
English: Scan of archival photograph, work for hire

Licensing

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:
This work was never published prior to January 1, 2003, and is currently in the public domain in the United States because it meets one of the following conditions:
  • its author died before 1954;
  • the death date of its author is not known, and it was created before 1904;
  • it is an anonymous work, a pseudonymous work, or a work made for hire, and it was created before 1904.

The above provisions are contained in 17 U.S.C. § 303. See also this page for more information.


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.

Captions

An astronomical bifilar micrometer.

Items portrayed in this file

depicts

image/tiff

File history

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Date/TimeThumbnailDimensionsUserComment
current22:27, 24 February 2016Thumbnail for version as of 22:27, 24 February 20164,648 × 2,756 (12.25 MB)Mu301BotFilar Micrometer, PD-US-unpublished, pre-1896
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