{"title":"Nature of Silvery Clouds","authors":"A. N. Sviridov, L. D. Saginov","doi":"10.1134/s1064226923140164","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The dynamics of the temperature of particles with a characteristic size of 10<sup>–7</sup>–10<sup>–6</sup> m at the boundary of Earth’s atmosphere and outer space is considered. Using graphite as an example, it is shown that at an altitude of 80–90 km from Earth’s surface, particles with a size of ∼5 × 10<sup>–7</sup> m or less can be heated above the temperature of the beginning of the glow (~900 K), reaching temperatures of more than 2000 K with a light turquoise glow. Based on the results obtained, it is concluded that the silvery clouds observed in the false dawn and after sunset from Earth’s surface are a cluster of white-hot nanoparticles.</p>","PeriodicalId":50229,"journal":{"name":"Journal of Communications Technology and Electronics","volume":"13 1","pages":""},"PeriodicalIF":0.4000,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Communications Technology and Electronics","FirstCategoryId":"94","ListUrlMain":"https://doi.org/10.1134/s1064226923140164","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
The dynamics of the temperature of particles with a characteristic size of 10–7–10–6 m at the boundary of Earth’s atmosphere and outer space is considered. Using graphite as an example, it is shown that at an altitude of 80–90 km from Earth’s surface, particles with a size of ∼5 × 10–7 m or less can be heated above the temperature of the beginning of the glow (~900 K), reaching temperatures of more than 2000 K with a light turquoise glow. Based on the results obtained, it is concluded that the silvery clouds observed in the false dawn and after sunset from Earth’s surface are a cluster of white-hot nanoparticles.
期刊介绍：
Journal of Communications Technology and Electronics is a journal that publishes articles on a broad spectrum of theoretical, fundamental, and applied issues of radio engineering, communication, and electron physics. It publishes original articles from the leading scientific and research centers. The journal covers all essential branches of electromagnetics, wave propagation theory, signal processing, transmission lines, telecommunications, physics of semiconductors, and physical processes in electron devices, as well as applications in biology, medicine, microelectronics, nanoelectronics, electron and ion emission, etc.
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