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Charles Jurine
Charles Jurine (1751–1819) was a Swiss zoologist who, inspired by a letter by Lazzaro Spallanzani to the Geneva Natural History Society, set about showing that bats used their ears to navigate. He corresponded with Spallanzani, who confirmed his findings but their work was largely ignored until the 20th century when Donald Griffin Donald Redfield Griffin (August 3, 1915 – November 7, 2003) was an American professor of zoology at various universities who conducted seminal research in animal behavior, animal navigation, acoustic orientation and sensory biophysics. In 1938 ... and G. W. Pierce proposed echolocation. Notes *Griffin, D.R. (1986). ''Listening in the Dark''. Cornell University Press, Ithaca *Houston, R., Parsons, S., Jones, G., and Bennett, A. (2001). ''Biosonar: Seeing with Sound''. www.biosonar.bris.ac.uk (2001). *Pollak, G.D. and Casseday, J.H. (1989). ''The Neural Basis of Echolocation in Bats''. Springer-Verlag, Berlin *Thomas, J.A., Moss, C.F., and Vater, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swiss (people)
The Swiss people (, , , ) are the citizens of the multi-ethnic Switzerland, Swiss Confederation (Switzerland) regardless of ethno-cultural background or people of self-identified Swiss abroad, Swiss ancestry. The number of Swiss nationality law, Swiss nationals has grown from 1.7 million in 1815 to 8.7 million in 2020. More than 1.5 million Swiss citizens hold multiple citizenship. About 11% of citizens Swiss abroad, live abroad (0.8 million, of whom 0.6 million hold multiple citizenship). About 60% of those living abroad reside in the European Union (0.46 million). The largest groups of Swiss descendants and nationals outside Europe are found in the Swiss Americans, United States, Swiss Brazilians, Brazil, and Swiss Canadians, Canada. Although the Switzerland as a federal state, modern state of Switzerland originated in 1848, the period of romantic nationalism, Switzerland is not a nation-state and the Swiss are not a single ethnic group. Rather, Switzerland is a Confederation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoologist
Zoology ( , ) is the scientific study of animals. Its studies include the structure, embryology, classification, habits, and distribution of all animals, both living and extinct, and how they interact with their ecosystems. Zoology is one of the primary branches of biology. The term is derived from Ancient Greek , ('animal'), and , ('knowledge', 'study'). Although humans have always been interested in the natural history of the animals they saw around them, and used this knowledge to domesticate certain species, the formal study of zoology can be said to have originated with Aristotle. He viewed animals as living organisms, studied their structure and development, and considered their adaptations to their surroundings and the function of their parts. Modern zoology has its origins during the Renaissance and early modern period, with Carl Linnaeus, Antonie van Leeuwenhoek, Robert Hooke, Charles Darwin, Gregor Mendel and many others. The study of animals has largely mov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lazzaro Spallanzani
Lazzaro Spallanzani (; 12 January 1729 – 11 February 1799) was an Italian Catholic priest (for which he was nicknamed Abbé Spallanzani), biologist and physiologist who made important contributions to the experimental study of bodily functions, animal reproduction, and animal echolocation. His research on biogenesis paved the way for the downfall of the theory of spontaneous generation, a prevailing idea at the time that organisms develop from inanimate matters, though the final death blow to the idea was dealt by French scientist Louis Pasteur a century later. His most important works were summed up in his book ''Expériences pour servir a l'histoire de la génération des animaux et des plantes'' (''Experiences to Serve to the History of the Generation of Animals and Plants''), published in 1785. Among his contributions were experimental demonstrations of fertilisation between ova and spermatozoa, and ''in vitro'' fertilisation''.'' Biography Spallanzani was born in Sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donald Griffin
Donald Redfield Griffin (August 3, 1915 – November 7, 2003) was an American professor of zoology at various universities who conducted seminal research in animal behavior, animal navigation, acoustic orientation and sensory biophysics. In 1938, while an undergraduate at Harvard University, he began studying the navigational method of bats, which he identified as animal echolocation in 1944. In ''The Question of Animal Awareness'' (1976), he argued that animals are conscious like humans. Griffin was the originator of the concept of mentophobia: the denial of the consciousness of other animals by scientists. Biography Griffin was born on August 3, 1915, in Southampton, New York, and attended Harvard University, where he was awarded bachelor's, master's and doctoral degrees. After serving on the faculty of Cornell University Cornell University is a Private university, private Ivy League research university based in Ithaca, New York, United States. The university wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal Echolocation
Echolocation, also called bio sonar, is a biological active sonar used by several animal groups, both in the air and underwater. Echolocating animals emit calls and listen to the Echo (phenomenon) , echoes of those calls that return from various objects near them. They use these echoes to locate and identify the objects. Echolocation is used for animal navigation , navigation, foraging, and predation, hunting prey. Echolocation calls can be Frequency modulation, frequency modulated (FM, varying in pitch during the call) or constant frequency (CF). FM offers precise range discrimination to localize the prey, at the cost of reduced operational range. CF allows both the prey's velocity and its movements to be detected by means of the Doppler effect. FM may be best for close, cluttered environments, while CF may be better in open environments or for hunting while perched. Echolocating animals include mammals, especially odontocetes (toothed whales) and some bat species, and, using s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1751 Births
In Britain and its colonies (except Scotland), 1751 only had 282 days due to the Calendar (New Style) Act 1750, which ended the year on 31 December (rather than nearly three months later according to its previous rule). Events January–March * January 1 – As the Province of Georgia undergoes the transition from a trustee-operated territory to a Crown colony, the prohibition against slavery is lifted by the Trustees for the Establishment of the Colony of Georgia in America. At the time, the Black population of Georgia is approximately 400 people, who had been kept in slavery in violation of the law. By 1790, the enslaved population of Georgia increases to over 29,000 and to 462,000 by 1860. * January 7 – The University of Pennsylvania, conceived 12 years earlier by Benjamin Franklin and its other trustees to provide non-denominational higher education "to train young people for leadership in business, government and public service". rather than for t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1819 Deaths
Events January–March * January 2 – The Panic of 1819, the first major peacetime financial crisis in the United States, begins. * January 25 – Thomas Jefferson founds the University of Virginia. * January 29 – Sir Stamford Raffles lands on the island of Singapore. * February 2 – ''Dartmouth College v. Woodward'': The Supreme Court of the United States under John Marshall rules in favor of Dartmouth College, allowing Dartmouth to keep its charter and remain a private institution. * February 6 – The 1819 Singapore Treaty, Treaty of Singapore, is signed between Hussein Shah of Johor and Sir Stamford Raffles of Britain, to create a trading settlement in Singapore. * February 15 – The United States House of Representatives agrees to the Tallmadge Amendment, barring slaves from the new state of Missouri (the opening vote in a controversy that leads to the Missouri Compromise). * February 19 – Captain William Smith (mariner), Willi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th-century Swiss Zoologists
The 19th century began on 1 January 1801 (represented by the Roman numerals MDCCCI), and ended on 31 December 1900 (MCM). It was the 9th century of the 2nd millennium. It was characterized by vast social upheaval. Slavery was Abolitionism, abolished in much of Europe and the Americas. The First Industrial Revolution, though it began in the late 18th century, expanded beyond its British homeland for the first time during the 19th century, particularly remaking the economies and societies of the Low Countries, France, the Rhineland, Northern Italy, and the Northeastern United States. A few decades later, the Second Industrial Revolution led to ever more massive urbanization and much higher levels of productivity, profit, and prosperity, a pattern that continued into the 20th century. The Catholic Church, in response to the growing influence and power of modernism, secularism and materialism, formed the First Vatican Council in the late 19th century to deal with such problems an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
