File:Beckman model db n009w2543.tiff
此 TIF 檔案的 JPG 預覽的大小：736 × 599 像素。 其他解析度：295 × 240 像素 | 589 × 480 像素 | 943 × 768 像素 | 1,257 × 1,024 像素 | 2,515 × 2,048 像素 | 3,276 × 2,668 像素。
原始檔案 （3,276 × 2,668 像素，檔案大小：25.07 MB，MIME 類型：image/tiff，2 頁）
摘要
Photograph of Beckman Model DB Spectrophotometer
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未知 |
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| 標題 |
Photograph of Beckman Model DB Spectrophotometer |
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| 描述 |
Photograph of Beckman Model DB Spectrophotometer The Beckman DB was a double beam model, made by Beckman Instruments, which allowed for comparison between two light paths: a reference and the sample being measured. Published without a copyright notice in Beckman Instruments Feedback newsletter, April 1960 (box 44, folder 34) |
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| 日期 | 1960年 | ||||||||||||||||||||
| 藏於 |
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| 登錄號 |
Beckman Historical Collection |
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| 取得方式/備註 | Science History Institute. | ||||||||||||||||||||
| 備註 | Image downloaded with permission from the Science History Institute, as part of the Wikipedian in Residence initiative. | ||||||||||||||||||||
| 來源 | https://digital.sciencehistory.org/works/8g84mm32q | ||||||||||||||||||||
| 授權許可 (重用此檔案) |
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| 日期/時間 | 縮圖 | 尺寸 | 使用者 | 備註 | |
|---|---|---|---|---|---|
| 目前 | 2019年8月6日 (二) 13:29 |  | 3,276 × 2,668，2 頁（25.07 MB） | Mary Mark Ockerbloom | == {{int:filedesc}} == {{Photograph |photographer ={{unknown}} |title = Photograph of Beckman Model DB Spectrophotometer |description = Photograph of Beckman Model DB Spectrophotometer The Beckman DB was a double beam model, made by Beckman Instruments, which allowed for comparison between two light paths: a reference and the sample being measured. Published without a copyright notice in Beckman Instruments ''Feedback'' newsletter, April 1960 (box 44, folder 34)... |
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