births
Ludolph van Ceulen, German-Dutch mathematician and academic (died 1610)
Related Wikipedia articles
Ludolph van Ceulen
German-Dutch mathematician
Ludolph van Ceulen was a German-Dutch mathematician from Hildesheim known for the Ludolphine number, his calculation of the mathematical constant pi to 35 digits.Source: Wikipedia (CC BY-SA)
January 28
Day of the year
January 28 is the 28th day of the year in the Gregorian calendar; 337 days remain until the end of the year.Source: Wikipedia (CC BY-SA)