When Prof. Sinha is first talking to his students in the class, on the blackboard behind him are displayed formulae from varied branches of science - mathematics, chemistry etc. Prominently visible is "Boney's Law of Time-Space Continuum". Boney Kapoor is the producer of the movie.
The film had originally been written for Amitabh Bachchan with his voice in mind. He rejected the "invisible" role which went to Anil Kapoor