62,734
edits
Changes
no edit summary
| 1850s || Technological development || American scientist {{w|John Leonard Riddell}} at {{w|Tulane University}}, develops the first practical binocular microscope.<ref name="Riddell">{{cite journal | author = Riddell JL | title = On the binocular microscope | journal = Q J Microsc Sci | volume = 2 | pages = 18–24 | year = 1854}}</ref><ref>{{cite book |last1=Ashhurst |first1=John |title=Address on Medical Biography: Delivered Before the International Medical Congress, at Philadelphia, September 5, 1876 |url=https://books.google.com.ar/books?id=40EXAQAAMAAJ&pg=PA21&dq=%221850..1859%22+John+Leonard+Riddell++first+practical+binocular+microscope.&hl=en&sa=X&ved=0ahUKEwijh_ytjYrgAhXvG7kGHRZODlMQ6AEILjAB#v=onepage&q=%221850..1859%22%20John%20Leonard%20Riddell%20%20first%20practical%20binocular%20microscope.&f=false}}</ref><ref>{{cite book |last1=Ashhurst |first1=John |title=Transactions of the International medical congress of Philadelphia. 1876 |url=https://books.google.com.ar/books?id=_wvYtzD27ywC&pg=PA109&dq=%221850..1859%22+John+Leonard+Riddell++first+practical+binocular+microscope.&hl=en&sa=X&ved=0ahUKEwijh_ytjYrgAhXvG7kGHRZODlMQ6AEIKTAA#v=onepage&q=%221850..1859%22%20John%20Leonard%20Riddell%20%20first%20practical%20binocular%20microscope.&f=false}}</ref> ||
|-
| 1863 || Technological development || English microscopist {{w|Henry Clifton Sorby}} pioners pioneers the use of metallurgical microscope for inverstigating investigating the microstructures microstructure of a variety of materials.<ref>{{cite book |last1=Suryanarayana |first1=C. |title=Experimental Techniques in Materials and Mechanics |url=https://books.google.com.ar/books?id=O7O4CRIo4KIC&pg=PA73&dq=1863+Henry+Clifton+Sorby+metallurgical+microscope+to+observe+structure+of+meteorites.%22&hl=en&sa=X&ved=0ahUKEwjLpZuZjorgAhXOEbkGHcnEBhAQ6AEILjAB#v=onepage&q=1863%20Henry%20Clifton%20Sorby%20metallurgical%20microscope%20to%20observe%20structure%20of%20meteorites.%22&f=false}}</ref><ref>{{cite book |title=Metallurgy for the Non-Metallurgist, Second Edition |edition=Arthur C. Reardon |url=https://books.google.com.ar/books?id=o-YTN9aXAeIC&pg=PA150&dq=1863+Henry+Clifton+Sorby+metallurgical+microscope+to+observe+structure+of+meteorites.%22&hl=en&sa=X&ved=0ahUKEwjLpZuZjorgAhXOEbkGHcnEBhAQ6AEIKTAA#v=onepage&q=1863%20Henry%20Clifton%20Sorby%20metallurgical%20microscope%20to%20observe%20structure%20of%20meteorites.%22&f=false}}</ref> || {{w|United Kingdom}}
|-
| 1860s || Scientific development || German physicist {{w|Ernst Abbe}} discovers the {{w|Abbe sine condition}}, a breakthrough in microscope design, which until then was largely based on trial and error.<ref name="From MEMS to Bio-MEMS and Bio-NEMS: Manufacturing Techniques and Applications">{{cite book |last1=Madou |first1=Marc J. |title=From MEMS to Bio-MEMS and Bio-NEMS: Manufacturing Techniques and Applications |url=https://books.google.com.ar/books?id=IBzSBQAAQBAJ&pg=PA292&dq=1860s+Ernst+Abbe+Abbe+sine+condition&hl=en&sa=X&ved=0ahUKEwjiyLu1wJXgAhXO1FkKHV2uCC4Q6AEIKTAA#v=onepage&q=1860s%20Ernst%20Abbe%20Abbe%20sine%20condition&f=false}}</ref> || {{w|Germany}}
