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In 1928, Scottish physician and microbiologist Alexander Fleming returned from vacation to what he initially thought was a spoiled experiment. After Leitz died in 1920, his son Ernst Leitz II took over as sole owner of the business. He renamed it the Optical Institute of Ernst Leitz, and by 1892, Leitz had opened up a sales office in New York City. In 1865, Ernst Leitz joined the company as an engineer and by 1869, took over the company after the death of Belthle. After Kellner’s untimely death at 29 years old from tuberculosis, his partner Friedrich Christian Belthle took over the company and operated under the name, Optical Institute Kellner and Belthle. In its early years, the Optical Institute mainly manufactured telescopes however, by the mid-nineteenth century, microscopes became their main product. While this instrument functioned as a simple microscope, other models also included a body tube attachment that allowed it to be used as a compound microscope.Įrnst Leitz’s origins can be tracked to the Optical Institute, founded in 1849 by Karl Kellner in Wetzlar, Germany.
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These features assisted Ross in his studies on malaria, as he owned an Ernst Weisz dissecting microscope during his scientific career. This style also included objective lenses that could be slotted easily into place (rather than screwed) as not to disturb the specimen. The design included a large, reinforced glass stage that could withstand the pressure of dissection. Germ theory also assisted Pasteur in creating vaccines for diseases such as rabies, anthrax, smallpox, and puerperal fever. This discovery resulted in the creation of the process called pasteurization, which assisted the saving the wine and beer industry.
![ernst leitz wetzlar microscope c. 1927 ernst leitz wetzlar microscope c. 1927](https://mirrorlasopa456.weebly.com/uploads/1/2/5/8/125858309/964454112.jpg)
Using his microscope, Pasteur identified that microorganisms cause fermentation and disease. Pioneered by Louis Pasteur, a French microbiologist, germ theory garnered support throughout Europe and is still used today. Germ theory states that many diseases are caused by the presence of microorganisms in the body. Germ theory changed the practice of medicine radically, as it brought a new understanding of diseases. Below are examples of discoveries that would have been impossible without the microscope: Germ Theory (1861) It has provided insight into a range of scientific studies such as medicine, forensic science, and genetics. The microscope made many of the scientific discoveries possible that have shaped our modern world.