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English: Reproduction of an optical device that Zacharias Snijder in 1841 claimed was an early telescope built by
Zacharias Janssen. In 1858 Utrecht professor
Pieter Harting claimed it to be a microscope, still attributed to Zacharias Janssen. Its actual function and creator has been disputed. Reproduction was made by John Mayall, London UK, in the 1890s and is presently in the collection of the National Museum of Health and Medicine in Silver Spring, MD. [1]
Date
Source
National Museum of Health and Medicine network.
Author
Alan Hawk, National Museum of Health and Medicine, Armed Forces Institute of Pathology, Department of Defense, U.S. Government
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{{subst:Please link images|File:Jaansen Microscope.jpg}} ~~~~
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This file has source information, but it either links directly to the file or is a generic base
URL, or is not an Internet source for a file that was likely found on the Internet. Source information should be provided so that the
copyright status can be verified by others. It is requested that a better source be provided to make determination of the copyright information easier. Please provide a URL to an
HTML page that contains this file. See
Commons:Licensing#License_information for more information.
Please remove this template once better source information is provided.
English: Reproduction of an optical device that Zacharias Snijder in 1841 claimed was an early telescope built by
Zacharias Janssen. In 1858 Utrecht professor
Pieter Harting claimed it to be a microscope, still attributed to Zacharias Janssen. Its actual function and creator has been disputed. Reproduction was made by John Mayall, London UK, in the 1890s and is presently in the collection of the National Museum of Health and Medicine in Silver Spring, MD. [1]
Date
Source
National Museum of Health and Medicine network.
Author
Alan Hawk, National Museum of Health and Medicine, Armed Forces Institute of Pathology, Department of Defense, U.S. Government
Please help improve this media file by adding it to one or more categories, so it may be associated with related media files (
how?), and so that it can be more easily found.
Please notify the uploader with
{{subst:Please link images|File:Jaansen Microscope.jpg}} ~~~~
Information
Captions
Add a one-line explanation of what this file represents