Solarization (physics): Difference between revisions
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'''Solarization''' | '''Solarization''' is a [[phenomenon]] in [[physics]] where a material temporary changes [[color]] after being subjected to high-energy [[electromagnetic radiation]], such as [[ultraviolet]] light or [[X-ray]]s. For example, clear [[glass]] and many [[plastic]]s may turn amber, green, or other colors when exposed to X-radiation, while glass can become blue after prolonged [[Sun|solar]] exposure in the [[desert]]. It is believed that solarization is caused by the formation of [[crystallographic defect|internal defects]], called [[F-center|color centers]], which selectively absorb portions of the visible [[light spectrum]]. In glass, color center absorption can often be reversed by heating the glass to high temperatures (a process called thermal bleaching) to restore the glass to its initial transparent state. However, solarization may also permanently degrade a material's physical or mechanical properties, and is one of the mechanisms involved in the breakdown of [[plastics]] within the environment. | ||
== Examples == | == Examples == | ||
In the field of clinical imaging, with sufficient [[Exposure value|exposure]], solarization of certain screen-film systems can occur which obscures details within the [[X-ray]] image and degrades the [[Accuracy and precision|accuracy]] of the [[diagnosis]]. Even though degradation can occur this was found to be a rare [[phenomenon]].<ref>Goodsitt, M.M., Hepburn, T.W., Cascade, P.N. and Chan, H.P., 1994. [https://pubs.rsna.org/doi/10.1148/radiology.193.3.7972839#d6393675e1history Solarization in clinical imaging]. Radiology, 193(3), pp.871-874.</ref> | In the field of clinical imaging, with sufficient [[Exposure value|exposure]], solarization of certain screen-film systems can occur, which obscures details within the [[X-ray]] image and degrades the [[Accuracy and precision|accuracy]] of the [[diagnosis]]. Even though degradation can occur, this was found to be a rare [[phenomenon]].<ref>Goodsitt, M.M., Hepburn, T.W., Cascade, P.N. and Chan, H.P., 1994. [https://pubs.rsna.org/doi/10.1148/radiology.193.3.7972839#d6393675e1history Solarization in clinical imaging]. Radiology, 193(3), pp.871-874.</ref> | ||
== See also == | == See also == | ||
Latest revision as of 10:26, 24 September 2025
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Solarization is a phenomenon in physics where a material temporary changes color after being subjected to high-energy electromagnetic radiation, such as ultraviolet light or X-rays. For example, clear glass and many plastics may turn amber, green, or other colors when exposed to X-radiation, while glass can become blue after prolonged solar exposure in the desert. It is believed that solarization is caused by the formation of internal defects, called color centers, which selectively absorb portions of the visible light spectrum. In glass, color center absorption can often be reversed by heating the glass to high temperatures (a process called thermal bleaching) to restore the glass to its initial transparent state. However, solarization may also permanently degrade a material's physical or mechanical properties, and is one of the mechanisms involved in the breakdown of plastics within the environment.
Examples
In the field of clinical imaging, with sufficient exposure, solarization of certain screen-film systems can occur, which obscures details within the X-ray image and degrades the accuracy of the diagnosis. Even though degradation can occur, this was found to be a rare phenomenon.[1]
See also
References
- ↑ Goodsitt, M.M., Hepburn, T.W., Cascade, P.N. and Chan, H.P., 1994. Solarization in clinical imaging. Radiology, 193(3), pp.871-874.