The video shows an elderly man with white hair and a beard wearing glasses and a brown sweater over a blue shirt. He is sitting in front of a blackboard with mathematical equations written on it. The man is speaking and gesturing with his hands as he talks. The blackboard behind him has several mathematical equations written in white chalk, including "E = mc^2" and "F = ma". The man appears to be giving a lecture or presentation, and he seems to be explaining the equations on the board.