Dhund is a 1973 Hindi movie produced and directed by B. R. Chopra. The film is based on Agatha Christie's play, The Unexpected Guest, and stars Sanjay Khan, his then flame Zeenat Aman, Danny Denzongpa, Deven Verma, Madan Puri, Navin Nischol and Ashok Kumar.
The heat equation is a parabolic partial differential equation that describes the distribution of heat (or variation in temperature) in a given region over time.
Heat conduction, the process by which heat transfers between two objects, is actually an example of diffusion. In conduction, the heat energy always moves from an area of high temperature to an area of low temperature. This can be seen as moving from a high concentration to low concentration, which occurs in diffusion.