Alexander von Humboldt is a famous German scientist who made important discoveries in geology, geography, mining, meteorology, astronomy, physics, chemistry, physiology, zoology, comparative anatomy, archaeology, ethnography, and history. His contemporaries called him Aristotle of the 19th century. Having completed in 1799-1804. large-scale expedition to the New World, he earned the title of “the true discoverer of America.” In 1829, at the invitation of Nicholas I, Humboldt went on an expedition to Russia, exploring our country for several months from St. Petersburg to Altai. The Humboldt family - Childhood and home education - Göttingen - First expeditions and writings - Sailing to South America - Neptunism – Research on irritability and electricity – Plant nutrition and respiration – Composition of the atmosphere Arrival in Tenerife – Climbing Teide Peak – Study of the local floraVenezuela – Earthquakes – Caracas and surrounding areas – Orinoco and Amazon – Andes – Peru – Lima – Mexico – North American states – Return to EuropePublication of the results of the expedition to America - Relocation to BerlinResults of the expedition - Climate and air of South AmericaResearch on temperature and climate - Isotherms and isochymenesStudy of atmospheric pressureHygrometric studiesInvention of the cyanometer - Study of the refraction of lightElectric eels and rays and animal electricity - Other zoological discoveriesWorks on botany - Botanical geographyStructure of the earth's crust and study rocksResearch on magnetism and deviation of the magnetic needle - Terrestrial magnetismAstronomical determination of coordinatesEthnographic, historical and linguistic observations in South AmericaPreparation of the expedition and travel around Russia - Publication of the results of the expedition - "Space" - Meteorological works - Measuring the average height of the continents