Planck\'s constant

[editor]

Brian Greene, in his book \'The Elegant Universe\' Chapt 4 talks about Planck\'s constant. He assures us that it is h bar. In the notes to the chapter he gives the value as 1.05 x 10^-27 gram.cm/s this is indeed the value for h bar, leaving aside his choice of strange values ( don\'t we all use Joule.second these days, i.e. 6.626 x 10^-34 kg.(m^2/s^2).s ) But that\'s not Planck\'s constant which is h. It is h/2pi. Why the confusion ??

Perhaps Xerxes could ask him ??