1790s introductions

The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of of a second, where the second is defined by a hyperfine transition frequency of caesium.

Homeopathy or homoeopathy is a pseudoscientific system of alternative medicine. It was conceived in 1796 by the German physician Samuel Hahnemann. Its practitioners, called homeopaths or homeopathic physicians, believe that a substance that causes symptoms of a disease in healthy people can cure similar symptoms in sick people; this doctrine is called similia similibus curentur, or "like cures like".

national flag of the French Republic

thumb|upright=1.3|A lithograph of Charles Marion Russell's The Custer Fight (1903), with the range of tones fading toward the edges.

United States coin with the value of ten cents

thumb|upright=1.7|Interpretation of Robertson's Fantasmagorie from F. Marion's ''L'Optique'' (1867)

American brand of bourbon whiskey

United States coin with a value of 1 cent

United States coin

coin minted by the United States from 1794 to 1795

United States coin

copper coin issued by the United States

United States dollar coin minted from 1795 to 1803

coin

The '''' (古事記伝) is a 44-volume commentary on the written by the kokugaku'' scholar Motoori Norinaga.

gold coin issued by the United States

coin in the United States

gold coin issued by the United States

First circulating coin produced by the US Mint

current denomination of British currency