PHOTOGALVANOGRAPHY Meaning and
Definition
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Photogalvanography is a specialized technique used in the realm of photography and printing processes, which entails the production of an image on a metal plate or cylinder through a combination of photographic and electrochemical procedures.
In this process, a photo-sensitive emulsion is applied to a metal surface that has been prepared with suitable coatings. The emulsion consists of light-sensitive chemicals, such as silver halides, that react when exposed to light. A negative or positive photographic transparency is then placed in contact with the emulsion, and the plate is exposed to light.
Upon exposure, the chemicals within the emulsion are altered in a manner that renders them more or less soluble in a particular solvent. The plate is then immersed in a developing solution that removes either the exposed (positive image) or unexposed (negative image) portions of the emulsion.
Following development, the plate is subjected to an electrochemical process known as galvanography. This technique involves the transfer of the photographic image onto a metal surface through the selective deposition of metal ions. This produces a raised or recessed relief image on the plate, depending on the particular method employed.
Photogalvanography is commonly utilized in the production of intaglio printing plates, which are used for a variety of applications such as fine art prints, currency and banknote production, and security features. This technique allows for the reproduction of intricate details and tonal ranges, resulting in high-quality printed images.
Common Misspellings for PHOTOGALVANOGRAPHY
- ohotogalvanography
- lhotogalvanography
- -hotogalvanography
- 0hotogalvanography
- pgotogalvanography
- pbotogalvanography
- pnotogalvanography
- pjotogalvanography
- puotogalvanography
- pyotogalvanography
- phitogalvanography
- phktogalvanography
- phltogalvanography
- phptogalvanography
- ph0togalvanography
- ph9togalvanography
- phorogalvanography
- phofogalvanography
- phogogalvanography
- phoyogalvanography
Etymology of PHOTOGALVANOGRAPHY
The word "Photogalvanography" is formed from the combination of three root words: "photo", "galvano", and "graphy".
1. "Photo" is derived from the Ancient Greek word "phōs", meaning "light". It is often used as a prefix referring to light or a process related to light, as seen in words like "photograph" and "photocopy".
2. "Galvano" comes from the name of an Italian scientist, Luigi Galvani (1737-1798). He is known for his experiments involving electricity and muscle contractions, particularly with frog legs. The term "galvano-" is often used as a prefix to denote an association with electricity or electrodeposition.
3. "Graphy" is derived from the Ancient Greek word "graphē", meaning "writing" or "drawing".
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