Friedrich Bessel

Ole Rømer and the Speed of Light

Ole Rømer and the Speed of Light

On October 5, 1644 (or according to the old julian calendar September 25), Danish astronomer Ole Christensen Rømer was born. He became known by the first proof published in 1676 that the speed of light is finite and not infinite, respectively by the guidance, how the speed of light can be calculated by observation of the Jupiter moons. Ole Rømer – Early Years Ole Rømer was born in Århus, Denmark, to merchant and skipper…
Read more
Fred Whipple and the Dirty Snowballs

Fred Whipple and the Dirty Snowballs

On August 30, 2004, American astronomer Fred Lawrence Whipple passed away. Amongst his achievements, he discovered some asteroids and comets, came up with the “dirty snowball” cometary hypothesis, and designed the Whipple shield. Fred Whipple was born on November 5, 1906, in Red Oak, Iowa, as the son of a farmer. An early bout with polio ended his ambition of being a professional tennis player. Whipple studied at Occidental College in Southern California,…
Read more
Friedrich Bessel and the Distances of Stars

Friedrich Bessel and the Distances of Stars

Friedrich Wilhelm Bessel (1784-1846) [1] On July 22, 1784, German mathematician and astronomer Friedrich Wilhelm Bessel was born. He is probably best known for his works in mathematics, where he discovered the eponymous Bessel-functions, which are critical for the solution of certain differential equations. Friedrich Wilhelm Bessel was born in Minden, Westphalia (today Germany), as second son of a civil servant. Bessel attended the Gymnasium in Minden for four years but he did…
Read more
Relation Browser
Timeline
0 Recommended Articles:
0 Recommended Articles: