| 词条 | Microphotograph |
| 释义 |
Microphotographs are photographs shrunk to microscopic scale.[2] Microphotography is the art of making such images. Applications of microphotography include espionage such as in the Hollow Nickel Case, where they are known as microfilm. Using the daguerreotype process, John Benjamin Dancer was one of the first to produce microphotographs, in 1839.[3] He achieved a reduction ratio of 160:1. Dancer perfected his reduction procedures with Frederick Scott Archer’s wet collodion process, developed in 1850–51, but he dismissed his decades-long work on microphotographs as a personal hobby, and did not document his procedures. The idea that microphotography could be no more than a novelty was an opinion shared by the 1858 Dictionary of Photography, which called the process "somewhat trifling and childish."[4] Novelty viewing devices such as Stanhopes were once a popular way to carry and view microphotographs.[2] An important application of microphotography is in microforms. See also
References1. ^Kristi Finefield (June 13th, 2012), "Caught Our Eyes: On the Head of a Pin", Picture This: Library of Congress Prints and Photos 2. ^1 [https://books.google.com/books?id=VYyldcYfq3MC&pg=RA1-PA94&lpg=RA1-PA94&dq=Dagron+Focal+encyclopedia&source=bl&ots=sYqcwyQg0T&sig=-zTqMthsJbUeVE7grtPwU13cwow&hl=en&ei=gaFFSt38GYuvtweg7u1q&sa=X&oi=book_result&ct=result&resnum=3 Focal encyclopedia of photography By Michael R. Peres] Focal Press, 2007 {{ISBN|9780240807409}}, 846 pages 3. ^{{cite book | title = Biographical Dictionary of the History of Technology | author = Lance Day and Ian McNeil | publisher = Taylor & Francis | year = 1998 | isbn = 9780415193993 | page = 333–334 | url = https://books.google.com/books?id=n--ivouMng8C&pg=PA333 }} 4. ^{{cite book |author=Sutton, Thomas |chapter=Microphotography |editor=Veaner, Allen B. |title=Studies in micropublishing, 1853–1976: documentary sources |publisher=Microform Review Inc |location=Westport, Conn |year=1976 |page=88 |isbn=0-913672-07-6 }} Originally published in [https://books.google.com/books?id=DXQCAAAAYAAJ&pg=PA295 Dictionary of Photography] (1858). 2 : Audiovisual introductions in 1839|Microscopy |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。