One of the highest honors a mathematician may earn is to be remembered centuries later by a widely utilized proof or equation. Thus we honor the German astronomer Friedrich Wilhelm Bessel for the many applications of his secondorder differential equations. We now investigate his equation "of the first kind" with discussion of the solution.





The
NCB is grateful to the Huntington Library for permission to use
Bessel's illustrations in this article. < http://catalog.huntington.org> 


Friedrich Bessel (1784  1846) Instrumento Estelar 1838 
2010 