A microform is a scaled-down reproduction of a document, typically either photographic film or paper, made for the purposes of transmission, storage, reading, and printing. Microform images are commonly reduced to about 4% or 1⁄25 of the original document size. For special purposes, greater optical reductions may be used.

2024年5月7日 · Microfilm is a photographic film containing microphotographs of documents, newspapers, books, and other materials. Typically, these microphotographs are reduced in size to fit onto a small strip of film, often measuring just 16mm or 35mm in width.

Microfiche or microfilm? Let’s start by clearing this one up with some definitions: both microfiche and microfilm are types of microform, storing photographic images of documentation too small to be visible to the human eye.

2020年7月14日 · Microfilm as an end result is old technology – not much has changed in 100 years. What has changed is the method in which it can be created. Mentioned earlier, there are two primary methods of creating roll film: photographing the original material, and archive writing. ...

The meaning of MICROFILM is a film bearing a photographic record on a reduced scale of printed or other graphic matter. How to use microfilm in a sentence.

Microcopy, or microfilm, the legal status of which as record copy usually has had to be determined by special legislation, is a practical medium for making additional copies of records as security against risk through acts of warfare; as preservation against normal deterioration or …

MICROFILM meaning: 1. film that is used for photographing information in a reduced size, or a piece of this film 2. to…. Learn more.

2016年6月20日 · That tool is microfiche, the plasticky film used to archive old print content, and it has a surprisingly diverse history—one that starts with a guy named John Benjamin Dancer. In 1839, Dancer,...

2017年6月26日 · In an era of digitization, NARA continues to microfilm records because microfilm is a low-cost, reliable, long-term, standardized image storage medium. The equipment needed to view microfilm images is simple, consisting of light and magnification.

Microfilming, also called microphotography, consists in the reduction of images to such a small size that they cannot be read without optical assistance. This amazing photographic compression often results in a ninety-nine percent saving of space.