1.
Carlo Bossoli
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Carlo Bossoli was a Swiss-born Italian painter and lithographer, who spent his early career in Ukraine. He is best known for scenes from the Risorgimento. His father was a stonemason of Italian origin, working in Switzerland, in 1820, his family moved to accept work in Odessa. Until 1826, he studied with the Capuchins, after graduating, he worked in a shop that sold antiquarian books and prints. It was there that he began to draw and sketch, in 1828, he was hired by the Odessa Opera to work as an assistant to Rinaldo Nannini, a stage designer who had studied at La Scala under Alessandro Sanquirico. He began to sell his paintings in 1833 and his father died three years later and he found himself the sole support of his mother, his sister and her illegitimate son. Luckily, his work drew the attention of Prince Mikhail Vorontsov, princess Elizabeta was impressed with his abilities and arranged for him to study in Italy from 1839 to 1840. He stayed mostly in Naples and Rome, giving attention to tempera and gouache. He returned in 1840 and settled in the resort of Alupka. In 1844, at the request of his mother, he moved to Milan, in 1848, he produced popular scenes from Five Days of Milan. During those years, he produced an album of paintings, showing views of Crimea and it proved to be very popular due to public interest in the Crimean War. Later, in 1859, they commissioned him to produce a series of lithographs depicting the Second Italian War of Independence which were published as The War in Italy. After seeing them, young Prince Oddone gave him a commission to follow the Piedmontese Army, the result was an album of 150 tempera paintings and the Prince declared him to be the painter of our history. He fell ill with a fever at this time and his productivity declined dramatically and he divided his time between decorating his home to resemble the Vorontsov Palace and doting on his nephew. In 1883, at the age of sixty-eight, he married Adelaide De Carolis, the following year, he died of a heart attack. He was buried in Lugano and a street in Turin is named after him, brief biography and more paintings @ Libero

2.
Leonhard Euler
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He also introduced much of the modern mathematical terminology and notation, particularly for mathematical analysis, such as the notion of a mathematical function. He is also known for his work in mechanics, fluid dynamics, optics, astronomy, Euler was one of the most eminent mathematicians of the 18th century, and is held to be one of the greatest in history. He is also considered to be the most prolific mathematician of all time. His collected works fill 60 to 80 quarto volumes, more than anybody in the field and he spent most of his adult life in Saint Petersburg, Russia, and in Berlin, then the capital of Prussia. A statement attributed to Pierre-Simon Laplace expresses Eulers influence on mathematics, Read Euler, read Euler, Leonhard Euler was born on 15 April 1707, in Basel, Switzerland to Paul III Euler, a pastor of the Reformed Church, and Marguerite née Brucker, a pastors daughter. He had two sisters, Anna Maria and Maria Magdalena, and a younger brother Johann Heinrich. Soon after the birth of Leonhard, the Eulers moved from Basel to the town of Riehen, Paul Euler was a friend of the Bernoulli family, Johann Bernoulli was then regarded as Europes foremost mathematician, and would eventually be the most important influence on young Leonhard. Eulers formal education started in Basel, where he was sent to live with his maternal grandmother. In 1720, aged thirteen, he enrolled at the University of Basel, during that time, he was receiving Saturday afternoon lessons from Johann Bernoulli, who quickly discovered his new pupils incredible talent for mathematics. In 1726, Euler completed a dissertation on the propagation of sound with the title De Sono, at that time, he was unsuccessfully attempting to obtain a position at the University of Basel. In 1727, he first entered the Paris Academy Prize Problem competition, Pierre Bouguer, who became known as the father of naval architecture, won and Euler took second place. Euler later won this annual prize twelve times, around this time Johann Bernoullis two sons, Daniel and Nicolaus, were working at the Imperial Russian Academy of Sciences in Saint Petersburg. In November 1726 Euler eagerly accepted the offer, but delayed making the trip to Saint Petersburg while he applied for a physics professorship at the University of Basel. Euler arrived in Saint Petersburg on 17 May 1727 and he was promoted from his junior post in the medical department of the academy to a position in the mathematics department. He lodged with Daniel Bernoulli with whom he worked in close collaboration. Euler mastered Russian and settled life in Saint Petersburg. He also took on a job as a medic in the Russian Navy. The Academy at Saint Petersburg, established by Peter the Great, was intended to improve education in Russia, as a result, it was made especially attractive to foreign scholars like Euler