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.
Spark plug heat dispersal. The heat that the electrode section of the spark plug receives due to combustion is dispersed through the path in the figure. The degree to which a spark plug disperses the heat it receives is called its heat range. Spark plugs with a high degree of heat dispersal are called high heat range (cold type) and those with a low degree of heat dispersal are called low heat range (hot type). This is largely determined by the temperature of the gas inside the combustion chamber and the spark plug design.