births
Joseph Petzval, German-Hungarian mathematician and physicist (died 1891)
Related Wikipedia articles
Joseph Petzval
Slovak physicist, mathematician and inventor
Joseph Petzval was a mathematician, inventor, and physicist best known for his work in optics. He was born in the town of Szepesbéla in the Kingdom of Hungary.Source: Wikipedia (CC BY-SA)
January 6
Day of the year
January 6 is the sixth day of the year in the Gregorian calendar; 359 days remain until the end of the year.Source: Wikipedia (CC BY-SA)