The Czech Republic's climate. The Czech Republic lies in a temperate climate zone with pleasantly mild summers and winters with only moderate amounts of precipitation. The average annual temperature ranges from 5.5C (42F ) to 10C (50F ), but temperatures are lower in the mountains.
Linear vs logarithmic scales. 1  Human hearing is better measured on a logarithmic scale than a linear scale. 2  On a linear scale, a change between two values is perceived on the basis of the difference between the values.  On a logarithmic scale, a change between two values is perceived on the basis of the ratio of the two values.
Ra and RMS are both representations of surface roughness, but each is calculated differently.Ra is calculated as the Roughness Average of a surfaces measured microscopic peaks and valleys. RMS is calculated as the Root Mean Square of a surfaces measured microscopic peaks and valleys.a and RMS are both representations of surface roughness, but each is calculated differently.