1 From the identification of ‘Cells’, to Schleiden & Schwann’s Cell Theory, to Confocal 2 Microscopy and GFP lighting up the Plant Cytoskeleton, to Super-Resolution 3 Microscopy with Single Molecule Tracking: Here’s... 4 A Short History of Plant Science Chapter 5: 5 A Short History of Plant Light Microscopy 6 Marc Somssich 7 School of BioSciences, the University of Melbourne, Parkville 3010, VIC, Australia 8 Email:
[email protected] ; Twitter: @somssichm 9 http://dx.doi.org/10.5281/zenodo.4682573 10 When the microscope was first introduced to scientists in the 17th century it started a 11 revolution. Suddenly a whole new world, invisible to the naked eye, opened up to curious 12 explorers. In response to this realization Nehemiah Grew, one of the early microscopists, 13 noted in 1682 ‘that Nothing hereof remains further to be known, is a Thought not well 14 Calculated.’1. And indeed, with ever increasing resolution, there really does not seem to be an 15 end to what can be explored with a microscope. 16 The Beginnings: Plant Internal Structures and ‘Cells’ (1600-1835) 17 While simple lenses were being used as magnifying glasses for several centuries, the early 18 17th century brought the invention of the compound microscope, and with it launched the 19 scientific field of microscopy2. It is not clear who invented the first microscope, but it was 20 most likely developed from early telescopes2. Galileo Galilei built his first telescope in the 21 early 1600s and used it to chart the stars2. He subsequently published his treatise ‘Sidereus 22 nuncius’ (1610) about his observations2,3.