Planck natural unit system

In Planck s natural unit system, entropy is a unitless variable and Boltzmann s constant takes the value 1. In this system, what are the physical units of temperature ... 

Finally, we shall almost always use natural units in which c, the velocity of light, mid ft Planck s constant divided by 2it are set equal to one. In this system of units, energy, mass, inverse length, and inverse time all have the same dimension. 

For brevity I have used in section 3.1 the system of natural units, in which the numerical value of the speed of light c and the numerical value of h = /i/(27t), with h being the Planck constant, are equal to 1. The Einstein convention of summing over repeated indices, of which one is covariant and one is contravariant, has been employed. 

Whereas the philosophy of science has tended to concentrate on scientific theories as the basic unit to be scrutinized, the coming of a more naturalistic approach has produced much work on the nature and function of scientific models. The second paper in section B originally appeared as a contribution to a symposium on paper tools held at the Max Planck Institute for the History of Science held in Berlin in 1999. In this paper I try to examine the extent to which the periodic system, which I claim is a paper tool par excellence, may or may not be a typical scientific model. 

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