Fyzikální ústav Akademie věd ČR

Seminář Středa, 10.09.2014 14:00 - 15:00

Přednášející: Jiří J. Mareš (Oddělení polovodičů)
Místo: FZÚ, Cukrovarnická 10, session room, building A, 1st floor
Pořadatelé: Oddělení polovodičů

Temperature, the central concept of thermal physics, is one of the most frequently employed physical quantities in common praxis. Even though the operative methods of the temperature measurement are described in detail in various practical instructions and textbooks, the rigorous treatment of this concept is almost lacking in the current literature. As a result, the answer to a simple question of “what the temperature is” is by no means trivial and unambiguous. There is especially an appreciable gap between temperature as introduced in the frame of statistical theory and the only quantity related to this concept which is experimentally observable, phenomenological temperature. Just the logical and epistemological analysis of phenomenological temperature is the kernel of the contribution. In contrast to our recently published work dealing with the same subject, the approach presented here is not based on Mach’s concept of hotness manifold but directly on the primary concept of thermoscopic state and on the very fact that the mathematical structure of actually observed physical quantities resembles rather to the rational than to the real numbers. Some important consequences of such an approach are shortly discussed.