Connect to a famous British/American physicist & mathematician

Cracked by Dibyo , VikraM , Goyal , Atul Mathew , Rey de Vaqueiros , kirankumar , jayanth , insufferablejake , duriel , Shakeel , prasanth , Ashwin , akhi , RajT , varuns88 , vinod , Tathagata Chatterjee , madhur , priyananda , svgreatest , p vs np , udupendra and Abhishek.

Rey de Vaqueiros(2), Dibyo, VikraM, Goyal, Atul Mathew, kirankumar, jayanth, insufferablejake, duriel, Shakeel, prasanth, Ashwin, akhi, RajT, varuns88, vinod, Tathagata Chatterjee, madhur, priyananda, svgreatest, p vs np, udupendra and Abhishek