Jan Swammerdam
Noun | 1. | Jan Swammerdam - Dutch naturalist and microscopist who proposed a classification of insects and who was among the first to recognize cells in animals and was the first to see red blood cells (1637-1680) |
单词 | jan swammerdam | |||
释义 | Jan Swammerdam
Jan SwammerdamSwammerdam, Jan(yän vä`mərdäm), 1637–80, Dutch naturalist. He was a pioneer in the use of the microscope. Before he turned to religious contemplation his chief interest was the study of invertebrates. He investigated the life histories of frogs and of numerous insects, which he classified on the basis of their metamorphic development. He also made valuable observations on human anatomy and was probably the first to detect red blood cells (1658). A composite collection of his descriptions and of his accurate and exquisitely executed drawings was published posthumously (2 vol., 1737–38) and appeared in English as The Book of Nature (1758). He was an early and influential proponent of the theory of evolutionevolution,concept that embodies the belief that existing animals and plants developed by a process of gradual, continuous change from previously existing forms. This theory, also known as descent with modification, constitutes organic evolution. ..... Click the link for more information. , in opposition to the current belief in spontaneous generation. Swammerdam, JanBorn Feb. 2, 1637, in Amsterdam; died there Feb. 15, 1680. Dutch naturalist. Swammerdam graduated from the University of Leiden in 1663. In 1667 he defended his dissertation on respiration in animals. His main works dealt with human and animal anatomy; his animal studies centered on insects, although he also studied mollusks, amphibians, and other animals. Swammerdam proposed classifying insects by subdividing them into four groups based on the characteristics of their metamorphosis. He supported the theory of preformation and rejected the possibility of spontaneous generation. He introduced a new preparation technique, developed many instruments used in making preparations, and performed the first intravascular injection. Swammerdam designed instruments to record cardiac output, respiratory movements, and muscular contractions following the stimulation of a nerve. WORKSHistoria insectorum generalis. Utrecht, 1669.Bybel der Natuure, vols. 1–2. Leiden, 1737–38. REFERENCCEKholodkovskii, N. A. Ian Svammerdam. Berlin, 1923.See Jan Swammerdam Jan Swammerdam
Synonyms for Jan Swammerdam
|
|||
随便看 |
|
英语词典包含2567994条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。