Galileo adjusted lenses for his scopes using trial and error,
as the early Dutch makers might have done.
Johannes Kepler and Christiaan Huygens, however, were
mathematicians, and they established a theoretical understanding
of how lenses worked, which resulted in improvements in magnification
and clarity.
Galileo adjusted lenses for his scopes using trial and error, as the early Dutch makers might have done. Johannes Kepler and Christiaan Huygens, however, were mathematicians, and they established a theoretical understanding of how lenses worked, which resulted in improvements in magnification and clarity.
See also in The book of science:
Readings on wikipedia: