![](https://nthumb.tpgimages.com/mid2_com_img/16166/26279/TOP25303620.jpg)
Engraving depicting a double convex lens, showing refraction of light and the conjugate focus (b,a). Dated 19th century
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Details
Creative#:
TOP25303620
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
No
Property Release:
No
Right to Privacy:
No
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