Main Question or Discussion Point
Say there is a cup of coffee at 80ºC and you allow it to cool down. Eventually the cup of coffee will become at room temperature (if anyone knows the equation for this fluctuations of temperatures I'd love to see it) what is causing it to go from these temperatures? What are the principles are causing the rise and fall of temperatures, what property causes it stop decrease from it's initial temperature and then stay at room temperature? Must all things level out temperature wise?