In the mid-19th century, Bessel made the first successful measurement of stellar parallax. He used a telescope with a split objective lens called a heliometer.
Bessel Kok was born in 1941.
Vasily Bessel was born in 1843.
Vasily Bessel died in 1907.
Friedrich Bessel was born on July 22, 1784.
Friedrich Bessel was born on July 22, 1784.
Johann Franz Bessel was born in 1672.
Johann Franz Bessel died in 1749.
Friedrich Bessel died on March 17, 1846 at the age of 61.
Ehmi Bessel was born on October 11, 1904, in Ludwigshafen, Germany.
Friedrich Bessel died on March 17, 1846 at the age of 61.
Ehmi Bessel died on February 3, 1988, in Hamburg, West Germany.
Erich Bessel-Hagen has written: 'Zahlentheorie' -- subject(s): Number theory