John Benjamin Dancer (8 October 1812 – 24 November 1887) was a scientific instrument maker and inventor of microphotography. He also pioneered stereography. By 1835, he controlled his father's instrument making business. He was responsible for various inventions, but did not patent many of his ideas. In 1852, he invented the stereoscopic camera (GB patent 2064/1852). He died at the age of 75 and was buried at Brooklands Cemetery, Sale, Greater Manchester.
Dancer improved the Daniell cell by introducing the porous pot cell, which he invented in 1838.
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