1 janv. 1854 - John Snow
Description:
The scientist John Snow had been claiming that cholera was carried in water or food and could be ingested. Colleagues have dismissed his idea. A cholera epidemic has broken out in London, in an area around a water pump. Snow takes a sample of the water from the pump and through a microscope finds it contaminated. He removes the pump's handle and the cholera comes to a quick end.Ajouté au bande de temps:
Date:
1 janv. 1854
Maintenaint
~ Il y a 171 ans