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    James Joule, Conservation of Energy  
James Prescott Joule was an English physicist and brewer, born in Salford, Lancashire. Joule studied the nature of heat, and discovered its relationship to mechanical work. This led to the law of conservation of energy, which led to the dev...
 
    Céspedes, Decl. of Independence Cuba 1868  
Carlos Manuel de Céspedes del Castillo was a Cuban planter who freed his slaves and made the declaration of Cuban independence in 1868 which started the Ten Years' War. Céspedes was a landowner and lawyer in eastern Cuba, near Bayamo, wh...
 
    John Adams, Predicted Neptune - 1841  
John Adams was an English mathematician and astronomer who predicted the existence of Neptune. While a student at Cambridge he wrote this note (found only after his death) dated Jul. 3, 1841: Formed a design at the beginning of this week of...
 
    Cyrus Field, 1st Atlantic Telegraph Cable - 1858  
Cyrus West Field was an American businessman and financier who led the Atlantic Telegraph Company, the company that successfully laid the first telegraph cable across the Atlantic Ocean in 1858. The cable broke down three weeks afterwar...
 
    John Henry Pepper, Pepper's Ghost Projection  
John Henry "Professor" Pepper was a British scientist and inventor who toured the English-speaking world with his scientific demonstrations. He entertained the public, royalty, and fellow scientists with a wide range of technological innova...
 
    Gregor Mendel, Father of Genetics  
Gregor Johann Mendel was a Austrian priest and scientist, and is often called the father of genetics for his study of the inheritance of traits in pea plants. Mendel showed that the inheritance of traits follows particular laws, which were...
 
    Louis Pasteur, Germ Theory of Disease  
Louis Pasteur was a French biologist, microbiologist and chemist renowned for his discoveries of the principles of vaccination, microbial fermentation and pasteurization. He is remembered for his remarkable breakthroughs in the causes and p...
 
    Lenoir, Internal Combustion Engine - 1859  
Jean Joseph Étienne Lenoir was a Belgian engineer who developed the internal combustion engine in 1859. Prior designs for such engines were patented as early as 1807, but none were commercially successful. Lenoir's engine was commercialized...
 
    John Speke, Source of the Nile -1856  
John Hanning Speke was an officer in the British Indian Army who made three exploratory expeditions to Africa and who is most associated with the search for the source of the Nile. In 1844 he was commissioned into the British army and p...
 
    Saigo Takamori, Last True Samurai  
Saigo Takamori was one of the most influential samurai in Japanese history, living during the late Edo Period and early Meiji Era. He has been dubbed the last true samurai. He was born Saigo Kokichi, and received the given name Takamori in...
 
    Muybridge, Father of Motion Picture  
Eadweard Muybridge is often called the father of the motion picture because of his photographic studies of animal motion. He began his career as a landscape photographer, and always considered himself more an artist than a scientist, altho...
 
    Eduard Suess, Discovery Supercontinent  
Eduard Suess was a geologist who was an expert on the geography of the Alps. He is responsible for discovering two of the Earth's major now-lost geographical features, the supercontinent Gondwana (proposed 1861) and the Tethys Ocean. Sue...
 
    Alfred Nobel, Inventor of Dynamite  
Alfred Bernhard Nobel was a Swedish chemist, engineer, inventor, businessman, and philanthropist. Known for inventing dynamite, Nobel also owned Bofors, which he had redirected from its previous role as primarily an iron and steel produc...
 
    Mendeleev, Creator Table of Elements  
Dimitri Mendeleev, was a Russian chemist. He is credited as being the primary creator of the first version of the periodic table of elements. Unlike other contributors to the table, Mendeleev predicted the properties of elements yet to be d...
 
    Count Ferdinand von Zeppelin  
Graf Ferdinand von Zeppelin, German army officer and airship inventor and builder. He entered the Prussian army in 1858 and served in the Seven Weeks War and in the Franco-Prussian War. He was an observer with the Union army during the Amer...
 
       
 
         
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