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Dear Eckard,
I do enjoy your 'voice' and style of your comments. It's at the same time refreshing and challenging. I can only hope to be as good in my answers as you are in your questions.
You will not find 'physis' in your German-English dictionary since this is a Greek word. Physics derives from it! Simply, 'prime physis' referes to 'first nature'. I find appropriate to use this term to describe the quantity eta in my essay . As 'first nature' it is undefined and undefinable. Other physical quantities like energy and momentum can be defined in terms of it. In my essay , 'prime physis eta' is the only quantity that connects mathematical results to physical nature.
You write, "How can you know my feelings? ". O.K. I don't know your "feelings". This was a statement of 'empathy' (agreement?) with previous statements you've made.
The 'classical' derivation of Planck's Law has been sought by physicists at the time (and some decades later) when Planck derived his formula using 'energy quanta'. This marks the beginnings of Quantum Physics. If you like, just disregard that statement all together. It does not change the substance and validity of my results.
As to the Rosetta Stone metaphore, all I meant by it is that the formulation of Planck's Law in my essay leads to many other connections to known Physics. For example, Planck's Law and Boltzmann's entropy equation can be shown to be mathematically equivalent.
You write, "... I am a bit shocked by the unexpected..." . We are all shocked by the unexpected! It's in the nature of the unexpected. But the shock is neither confirming nor denying what may shock us. Just like there are problems with 'point masses', we should suspect also 'events' happening instantly at t=s. As I show in my essay , Thermodynamics requires 'more time' than 'no time'.
I'll let Hayrani Oz speak for himself! But he is too busy right now to engage in this forum. I can only direct you to a pdf file of his response to Ken Wharton. You can find this attached under my post under Ken's essay.
Constantinos