By Robert G. Fleagle and Joost A. Businger (Eds.)
This ebook is addressed to those that desire to comprehend the connection among atmospheric phenomena and the character of subject as expressed within the rules of physics. The attention-grabbing atmospheric phenomena are greater than purposes of gravitation, of thermodynamics, of hydrodynamics, or of electrodynamics; and mastery of the result of managed test and of the comparable idea on my own doesn't mean an realizing of atmospheric phenomena. This contrast arises as the quantity and the complexity of the ambience enable results and interactions which are totally negligible within the laboratory or are intentionally excluded from it. the target of laboratory physics is, via setting apart the suitable variables, to bare the basic homes of subject; while the target of atmospheric physics, or of any observational technological know-how, is to appreciate these phenomena which are attribute of the full approach. For those purposes the exposition of atmospheric physics calls for titanic extensions of classical physics. It additionally calls for that knowing be in line with a coherent "way of seeing" the ensemble of atmospheric phenomena. simply then is knowing prone to stimulate nonetheless extra common insights.
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Extra info for An Introduction to Atmospheric Physics
Thus on the Celsius scale the ice and steam points are at O" C and 100° C, respectively. It is now possible to determine from Eq. 000044) x 10- 2 3 J K~I. A definition of temperature which is independent of kinetic theory has been given by Kelvin using the second law of thermodynamics. The root mean square (rms) speed of the molecules may now be calculated from Eq. 8) for any temperature if the mass of the molecules and the Boltzmann constant are known. In this way the rms speed for nitrogen molecules in air at 280 K is found to be 500 m s- 1.
9 it follows that work done by a system depends on the process it goes through and not only on the initial and final states of the system; therefore dw is not expressible as an exact differential by expansion in terms of the state variables. The same consideration holds for heat. E properties of the exact differential are discussed. In order to transform the first law of thermodynamics [Eq. 34)J to a form containing only exact differentials, divide this equation by the temperature and eliminate the pressure by use of the equation of state.
The pressure, specific volume and temperature are called the state variables. It is clear that two state variables define the state of a system, and the endeavor of thermodynamics is to describe the characteristic properties of matter during various processes entirely in terms of the state variables. It is evident that only a special class of processes can be described, processes that are so gradual that at each instant the state of the system can be defined. In other words, the process evolves from one equilibrium state to the next.
An Introduction to Atmospheric Physics by Robert G. Fleagle and Joost A. Businger (Eds.)