David Jonsson
Sun, 29 Jun 2008 02:08:09 -0700
On Sun, Jun 29, 2008 at 3:19 AM, <[EMAIL PROTECTED]> wrote: > In reply to David Jonsson's message of Sun, 29 Jun 2008 02:00:17 +0200: > Hi David, > [snip] > >Please check > >http://djk.se/physics/ > [snip] > >Degrees of freedom is 5 so the relation between kinetic energy and heat is > >Eheat=k BT=5 m<v >2 > >2 > >The rotational energy of an air molecule is for one degree of freedom is > one fifth of the above > > If there are 3 degrees of translation, then there should also be 3 degrees > of > rotation, except that 1 of these is about the molecular axis, which leaves > only > 2. Thus, 5 altogether so far. There is also 1 degree of vibrational freedom > (along the molecular axis), hence 6 in all IMO. Of these, 2 are rotational, > hence 1/3 of the total. Hi I don't count vibrational since they aren't excited at these temperatures. I have clarified this in the file now. I also describe the rotational as ½m<v>^2. That make a total of five. As I have only used rotation around one axis I have taken the energy to be 1/5 of the total. Hope to be able to update the calculus with the magnetic moment sometime. Help to know about how the charges are distributed on an gas ion would help. I also need info on how to ionize air and what typical ionization levels are. One thing I would like to include is radiation from currents in air due to many molecules oscillating together. i don't know how to do this right now. As far as I know from gas dynamics it is very rare for many molecules close to each other to move in the same direction. David -- David Jonsson Sweden phone callto:+46703000370