Editing 1870s (section)

==Science and technology==
{{see also|Timeline of historic inventions#1870s}}
[[File:Lignedefeu16August.jpg|thumb|right|250px|[[Franco-Prussian War]]]]
[[File:Edison and phonograph edit1.jpg|thumb|Photograph of [[Thomas Edison]] with his phonograph, taken by [[Mathew Brady]] in 1877]]
[[Image:Light Bulb.jpg|thumb|The first version of the [[light bulb]] was invented by Edison in 1879]]
* The prototype telephone was invented by [[Alexander Graham Bell]] in 1876.
* The [[phonograph]] is invented in 1877 by [[Thomas Edison]].
* The 6.35mm [[headphone jack]] was invented in 1878 and is still widely used today.
* The first version of the [[light bulb]] was invented by [[Thomas Edison]] in 1879.<ref name="y221">{{cite web|title=The Incandescent Light Bulb (1879): October 22-23, 2023 | website=Census.gov | date=2023-10-19 | url=https://www.census.gov/newsroom/stories/incandescent-light-bulb.html#:~:text=According%20to%20the%20Thomas%20Edison,a%20home%20for%20many%20hours. | access-date=2025-03-03}}</ref>
* The [[steam drill]] is invented in 1879.
* [[Ludwig Boltzmann]] statistically defined [[entropy|thermodynamic entropy]].
* [[Weltausstellung 1873 Wien|1873 Weltausstellung]] in [[Vienna]], [[Centennial Exposition|1876 Centennial Exposition]] in [[Philadelphia]] and [[Exposition Universelle (1878)|1878 Exposition universelle]] in [[Paris]].