{"title":"双光束记录分光密度计。","authors":"D Staynov, G Stainov","doi":"10.1088/0022-3735/2/12/433","DOIUrl":null,"url":null,"abstract":"A double-beam recording spectrodensitometer has been constructed to measure the optical density of dry agar electrophoregrammes. The measuring and reference beams are modulated with different frequencies. Two resonance amplifiers separate the signals. The electronic logarithmic recording is independent of the nonlinear characteristics of the valves.","PeriodicalId":16983,"journal":{"name":"Journal of Scientific Instruments","volume":"2 12","pages":"1114-5"},"PeriodicalIF":0.0000,"publicationDate":"1969-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/0022-3735/2/12/433","citationCount":"3","resultStr":"{\"title\":\"A double-beam recording spectrodensitometer.\",\"authors\":\"D Staynov, G Stainov\",\"doi\":\"10.1088/0022-3735/2/12/433\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A double-beam recording spectrodensitometer has been constructed to measure the optical density of dry agar electrophoregrammes. The measuring and reference beams are modulated with different frequencies. Two resonance amplifiers separate the signals. The electronic logarithmic recording is independent of the nonlinear characteristics of the valves.\",\"PeriodicalId\":16983,\"journal\":{\"name\":\"Journal of Scientific Instruments\",\"volume\":\"2 12\",\"pages\":\"1114-5\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1969-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1088/0022-3735/2/12/433\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Scientific Instruments\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1088/0022-3735/2/12/433\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Scientific Instruments","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/0022-3735/2/12/433","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A double-beam recording spectrodensitometer has been constructed to measure the optical density of dry agar electrophoregrammes. The measuring and reference beams are modulated with different frequencies. Two resonance amplifiers separate the signals. The electronic logarithmic recording is independent of the nonlinear characteristics of the valves.
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