Nobel and his parents returned to Sweden from Russia and Nobel devoted himself to the study of explosives, and especially to the safe manufacture and use of nitroglycerine (discovered in 1847 by Ascanio Sobrero, one of his fellow students under Théophile-Jules Pelouze at the University of Turin).
His student Ascanio Sobrero was the discoverer of nitroglycerin (1847), and another student, Alfred Nobel, was to take that discovery on to great heights in the form of commercial explosives including dynamite.
Ascanio Sobrero | Ascanio in Alba | Corradino D'Ascanio | Ascanio II Piccolomini |