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In the 1670s, he started to explore microbial life with his microscope. Using single-lensed microscopes of his own design and make, Van Leeuwenhoek was the first to observe and to experiment with microbes, which he originally referred to as dierkens, diertgens or diertjes. [note 3] He was the first to relatively determine their size.
Zacharias Janssen; also Zacharias Jansen or Sacharias Jansen; 1585 – pre-1632 [1]) was a Dutch spectacle-maker who lived most of his life in Middelburg.He is associated with the invention of the first optical telescope and/or the first truly compound microscope, but these claims (made 20 years after his death) may be fabrications put forward by his son.
Zentmayer's crowning achievement was the glorious Centennial Model, made in April 1876, so named because it was exhibited at the Centennial in Fairmount Park. The Centennial Commission awarded Zentmayer a medal for the high quality of his workmanship and for the several innovations incorporated in his new microscope.
Spencer Microscope: Brass and glass, made circa 1849-1859 by C. A. & H. Spencer, Canastota, NY USA Spencer’s first microscopes were available for purchase in 1838. [ 2 ] Previous to Spencer’s invention, European manufacturers held a monopoly on research-quality microscopic equipment. [ 3 ]
In 1663 and 1664, Hooke made his microscopic, and some astronomic, observations, which he collated in Micrographia in 1665. His book, which describes observations with microscopes and telescopes, as well as original work in biology, contains the earliest-recorded observation of a microorganism, the microfungus Mucor.
Cuff eventually set up his own establishment as a "Spectacle and Microscope Maker, At the sign of the Reflecting Microscope and Spectacles opposite Serjeant's Inn" [5] "(1737-57) & Double Microscope, three Pairs of Golden Spectacles & Hadley's Quadrant opposite Salisbury Court (1757-8) both in Fleet St & Strand, all in London, England."
c.1622: Drebbel presents his invention in Rome. 1624: Galileo improves on a compound microscope he sees in Rome and presents his occhiolino to Prince Federico Cesi, founder of the Accademia dei Lincei (in English, The Linceans). 1625: Francesco Stelluti and Federico Cesi publish Apiarium, the first account of observations using a compound ...
After his novitiate, in 1656 he was sent to study at the Society's noted Roman College. There he became a pupil of the German scientist, Athanasius Kircher. While a student there, he undertook the manufacturing of microscopic lenses. He used his lenses to create his own microscope and to develop scientific studies of a number of specimens.