He was the first optical engineer, and loved by most people for the introduction of the eight hour work day,
Ernst Abbe died on January 14, 1905 at the age of 64.
Ernst Abbe was born on January 23, 1840.
Ernst Abbe was born on January 23, 1840 and died on January 14, 1905. Ernst Abbe would have been 64 years old at the time of death or 172 years old today.