What is Spontaneous: Definition and 157 Discussions

Which of these is spontaneous?? Which of the following are spontaneous at constant T and P ? (a) DH = -10 KJ DS = +5 J/K T = 298K (b) DH = +5 KJ DS = -5 J/K T = 10K (c) DH = -10 KJ DS = -40 J/K T = 300K (d) DH = -10 KJ DS = -40 J/K T =...

http://arxiv.org/pdf/gr-qc/0501014 A static 10 dimensional universe can arise spontaneously, by a quantum fluctuation?

Hey this is a weird subject but have any of you ever thought about what causes it, if it is indeed real? I have a theory but it may be totally wrong as I don't have a background in physics or chemistry. Well I read about solar neutrinos and how they pass through our bodies all the time. They...

'splaing to do... I don't know if I am coming or going. But, I am not leaving the forum. I just said, "Good-bye" earlier. <shrug> I am enjoying this forum, the posts, the reads and topics. (Greg? You can keep the $25.00 fee) I have to tell you (those reading this) that I am a very...

The following theory is something I have been working on. It combines ideas of quantum mechanics to explain the possible source of all phenomena, I really want to see some feedback. In quantum mechanics we all know that there is always some probability that a particle entering a potential...

I'm searched for this on the forum and came up with no real results... I'm looking for open opinions or experience either in support or against the matter of Spontaneous Combustion! I believe it is possible, but as just another rarity within our materialistic world. Could it be that we have...

I have a question I hope someone can help me with. Does light ever spontaneously lose energy? What I mean is, would, say, an infrared wave be traveling along and suddenly shift to microwave radiation, and maybe later to a radio wave, without any outside influences having affected it? If...