Piara Singh Gill was a well-known physicist who specialized in cosmic ray research. His tenacity is evident in his journey from walking 10 kilometres to attend school in a rural Pakistani village to receiving grants from top universities in the United States. His days of difficulty included driving cabs, gathering fruit, and cleaning floors, all of which helped him develop total discipline, allowing him to eventually become an internationally renowned physicist whose work is still valued today.
Bawa Kartar Singh was an eminent Sikh Scientists of his era. He intensively studied stereochemistry and published a huge number of research papers. He also established various research laboratories in India. He was one of the ten Indians who were asked to send proposals for Nobel Prize in Chemistry. He was a staunch Sikh and established a gurudwara related to Guru Nanak Dev Ji.