Joseph Ritter von Fraunhofer is known for discovering the dark absorption lines known as Fraunhofer lines in the Sun's spectrum, and for making excellent optical glass and achromatic telescope objectives. In 1814 Fraunhofer invented the...

Shaka (Tshaka, Tchaka or Chaka; sometimes referred to as Shaka Zulu; was the most influential leader of the Zulu Kingdom. He is widely credited with uniting many of the Northern Nguni people, specifically the Mtetwa Paramountcy and the Ndwa...

Louis Daguerre was a doctor, a painter and a theatrical set designer, but he is best remembered as one of the inventors of photography. Both he and Nicéphore Niepce began their initial experiments separately, but in 1829, they teamed up. Ni...

Ivan Nabokov was a Russian Adjutant general and general of infantry prominent during the Napoleonic wars. Nabokov came from an old noble family based in the Novgorod governorate, where his father general Alexander Nabokov was a landowner...

Sir Samuel Cunard, a Canadian-born British magnate, was a giant of Atlantic shipping. When the British government invited bids (1838) for carrying mail between England and Boston, Cunard's carefully considered plans won him the contract, an...

Emma Willard was an American women's rights advocate and the pioneer who founded the first women's school of higher education. When Emma Willard addressed the New York legislature in 1819 on the subject of education for women, she was contr...

Sacagawea, also Sakakawea or Sacajawea, was a Lemhi Shoshone woman who helped the Lewis and Clark Expedition achieve each of its chartered mission objectives exploring the Louisiana Purchase. With the expedition, between 1804 and 1806, she...

Lord Byron was an English poet and a leading figure in the Romantic movement. Among Byron's best-known works are the lengthy narrative poems Don Juan and Childe Harold's Pilgrimage and the short lyric She Walks in Beauty. He is regarded as...

Augustin-Jean Fresnel was a French civil engineer and physicist whose research in optics led to the almost unanimous acceptance of the wave theory of light, excluding any remnant of Newton's corpuscular theory, from the late 1830s until the...

The Infante Carlos of Spain was the second surviving son of King Charles IV of Spain and of his wife, Maria Luisa of Parma. As Carlos V he was the first of the Carlist claimants to the throne of Spain. He is often referred to simply as 'Don...

Arthur Schopenhauer was a German philosopher. He is best known for his 1818 work The World as Will and Representation (expanded in 1844), wherein he characterizes the phenomenal world as the product of a blind and insatiable metaphysical wi...

Christian Jürgensen Thomsen was a Danish antiquarian who developed early archaeological techniques and methods. In 1816 he was appointed head of 'antiquarian' collections which later developed into the National Museum of Denmark in Copen...

The Constitution of the United States is the supreme law of the United States of America. The Constitution, originally comprising seven articles, delineates the national frame of government. Its first three articles entrench the doctrine of...

The Storming of the Bastille in Paris occurred on 14 July 1789. While the medieval fortress and prison known as the Bastille contained only seven prisoners, its fall was the flashpoint of the French Revolution and it subsequently become an...

The French Revolution was a period of radical social and political upheaval in France from 1789 to 1799 that profoundly affected French and modern history, marking the decline of powerful monarchies and churches and the rise of democracy an...