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Using the daguerreotype process, John Benjamin Dancer was one of the first to produce microphotographs, in 1839. [1] He achieved a reduction ratio of 160:1. Dancer refined his reduction procedures with Frederick Scott Archer's wet collodion process, developed in 1850–51, but he dismissed his decades-long work on microphotographs as a personal hobby and did not document his procedures.
Đồng Xoài is located on an elevation of 88.63 m above the sea level, 101 km north from Ho Chi Minh City, 90 km from the Hoa Lư border crossing. Đồng Xoài is connected through national highway 14.