William Harkness

19th-century astronomer who designed telescopes and served on the Transit of Venus commission. He also invented the spherometer caliper.He published his most important scientific work, The Solar Parallax and its Related Constants, in 1891.He and Nobel Prize-winning chemist, Peter Agre, both held the position (a century apart) of president of the American Association for the Advancement of Science.

He studied at Lafayette College in Pennsylvania and at the University of Rochester (New York state) before moving to New York City to train as a physician. During the Civil War, he worked as a Union Army surgeon.

He was born in Ecclefechan, Scotland to James Harkness and Jane Wield Harkness.

Scientist William Harkness were born on Sunday, birthstone is Turquoise, the seaon was Fall in the Chinese year of , it is 348 days until William Harkness next birthday.

December 17 Horoscope.