Identify this unsung hero of modern science:

who was a major influence on the work of this guy:

And both of their work would’ve been useless without this guy’s work:

This question comes courtesy Prabhu, muchos gracias maga!

**Cracked by: **udupendra , Poornima , Piyush , Swetha , Madan , ram , nihit , asha , Abhishek , Prasanth, Srichand Pendyala , and Archana.

udupendra, Poornima, Piyush, Swetha, Madan, ram, nihit, asha, yaksha, Abhishek, Prasanth, Srichand Pendyala and Archana