Foehn wind 3) Mechanical mixing: When river water passes over rocks, turbulence is generated in the form of rapids, and white water reveals the turbulent mixing of the water with the air above. Similarly, as air passes over mountains, turbulence occurs and the atmosphere is mixed in the vertical. This mixing generally leads to a downward warming and upward moistening of the cross-mountain airflow, and consequently to warmer, drier foehn winds in the valleys downwind. 4) Radiative warming: Dry foehn conditions are responsible for the occurrence of rain shadows in the lee of mountains, where clear, sunny conditions prevail. This often leads
What is a Masterpiece? particular (the fruits of the era in which the artist lived) with the universal (the grand themes raised by the human condition itself) in Clark's view. Clark's definition of an artistic masterpiece was based on a number of different considerations and criteria that apply to different works produced in markedly different time periods and milieux. For example, in this particular work he argued that it is the "creation of an individual artist's authentic genius." At the same time, he expounded a number of other aspects that for him were essential in the configuration of a masterpiece: that it is "a