1861
Medicine
France
Germ theory of disease
Pasteur links microorganisms to fermentation and infection.
Why it mattered
Antisepsis, pasteurisation and public health followed directly.
Industrial Age
1861
2 recorded milestones at this point in the record.
1861
Art & Culture
Britain
Colour photography demonstrated
Maxwell projected three filtered images to produce a colour photograph.
Why it mattered
The three-colour principle behind all colour imaging since.
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