History of science 1841 - 1880

Marx and Engels publish Communist Manifesto 1848
Lincoln becomes president of USA 1860
Suez Canal opened 1869
Darwin’s observations during the voyage of HMS Beagle confirm Lyell’s theories
Darwin publishes his on the origin of species
Lister begins antiseptic
Medicine and Pasteur shows microbes cause disease
Mendel’s experiments reveal laws of inheritance of genes
Mendeleyev devises periodic table of elements
Bunsen and Kirchhoff design first spectroscope, discover caesium and rubidium with it
Maxwell announces theory of electromagnetic waves
Joule measures amount of heat
Adams and Leverrier pinpoint position of Neptune and Galle finds it with telescope
Mobius discovers a figure with only one side and one edge

Safety pin c. 1849
Passenger lift c. 1852
Refrigerator 1858
Telephone 1875
Light bulb c. 1875