وبلاگ تخصصی میکروبیولوژی-بیوتکنولوژی

Development of microscopy: Aristotle (384-322) and others believed that living organisms could develop from non-living materials. 1590: Hans and Zacharias Janssen (Dutch lens grinders) mounted two lenses in a tube to produce the first compound microscope. 1660: Robert Hooke (1635-1703) published "Micrographia", containing drawings and detailed observations of biological materials made with the best compound microscope and illumination system of the time. 1676: Anton van Leeuwenhoek (1632-1723) was the first person to observe microorganisms. 1883: Carl Zeiss and Ernst Abbe pioneered developments in microscopy (such as immersion lenses and apochromatic lenses which reduce chromatic aberration) which perist until the present day. 1931: Ernst Ruska constructed the first electron microscope. Spontaneous generation controversy: 1688: Francesco Redi (1626-1678) was an Italian physician who refuted the idea of spontaneous generation by showing that rotting meat carefully kept from flies will not spontaneously produce maggots. 1836: Theodor Schwann (1810-1882) helped develop the cell theory of living organisms, namely that that all living organisms are composed of one or more cells and that the cell is the basic functional unit of living organisms. 1861: Louis Pasteur's (1822-1895) famous experiments with swan-necked flasks finally proved that microorganisms do not arise by spontaneous generation. This eventually led to: Development of sterilization Development of aseptic technique