Ernst Karl Abbe

Ernst Karl Abbe (January 23, 1840 in Eisenach – January 14, 1905 in Jena), was a German physicist. Download high resolution version (335x645, 15 KB)source: German Wikipedia Abbe. ... Download high resolution version (335x645, 15 KB)source: German Wikipedia Abbe. ... January 23 is the 23rd day of the year in the Gregorian Calendar. ... 1840 is a leap year starting on Wednesday (link will take you to calendar). ... Eisenach is a city in Thuringia, Germany. ... January 14 is the 14th day of the year in the Gregorian calendar. ... 1905 was a common year starting on Sunday (see link for calendar). ... Map of Germany showing Jena Jena is a town in central Germany on the River Saale. ... The word physicist should not be confused with physician, which means medical doctor. ...

Abbe is best known for his work in optics; however, during his association with Carl Zeiss' microscope works, in Jena, he introduced the eight-hour workday, in remembrance of the 14-hour workday of his own father. The eight-hour workday would not be widely emulated in the United States until its use in the next century by the Ford Motor Company 1914, although it was proclaimed in 1884. See also list of optical topics. ... Carl Zeiss Carl Zeiss (September 11, 1816 – December 3, 1888) was an optician commonly known for the company he founded, Zeiss. ... 1852 microscope Compound microscope made by John Cuff in 1750 A microscope (Greek: micron = small and scopos = aim) is an instrument for viewing objects that are too small to be seen by the naked or unaided eye. ... Map of Germany showing Jena Jena is a town in central Germany on the River Saale. ... Eight-hour day banner, Melbourne, 1856 The Eight-hour day movement had its origins in the Industrial Revolution in Britain, where industrial production in large factories transformed working life and imposed long hours and poor working conditions. ... The Ford Motor Company (often referred to simply as Ford; sometimes nicknamed Fords or FoMoCo, (NYSE: F) is an automobile maker founded by Henry Ford in Detroit, Michigan, and incorporated on June 16, 1903. ... 1914 is a common year starting on Thursday. ... 1884 is a leap year starting on Tuesday (click on link to calendar). ...

See also:

• Aberration in optical systems
• Abbe number
• Abbe prism
• Abbe refractometer
• Abbe sine function

Aberration in optical systems (lenses, prisms, mirrors or series of them intended to produce a sharp image) generally leads to blurring of the image. ... In physics and optics, the Abbe number, also known as the V-number or constringence of a transparent material is a measure of the materials dispersion (variation of refractive index with wavelength). ... In optics, an Abbe prism, named for its inventor, the German physicist Ernst Abbe, is a type of constant deviation dispersive prism similar to a Pellin_Broca prism. ...

External link

• MacTutor's Biography of Ernst Karl Abbe