Published February 25, 2013. It's a wrap on the Oscars! Django Unchained was the night's first winner, scoring a Best Supporting Actor prize for Christoph Waltz. The film also earned writer/director Quentin Tarantino a nod for Best Original Screenplay.
Spontaneous combustion. Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self-heating (increase in temperature due to exothermic internal reactions), followed by thermal runaway (self heating which rapidly accelerates to high temperatures) and finally, autoignition.
Just because a reaction is spontaneous, it does not automatically imply that these reactions occur instantaneously. An example of this is when iron nails rust due to constant exposure to moisture -- this process does not occur overnight, but can take days or months.n a spontaneous reaction, just because the overall change in entropy is positive, does not mean that the entropy of the systems and surroundings should always both be positive.