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1820s: FIRST ACHROMATIC COMPOUND MICROSCOPES
• FRANCE: Charles Chevalier (1823)
• UK: Joseph Jackson Lister (1826)
Reduction of:
The distortion factor from ∼ 19% to 3%
Fringes of colour around the the object under study Complexity in the use and price
EXPLOSION OF MICROSCOPIC STUDIES IN ALL MEDICAL FIELDS
