However, the effect that global warming will cause on earth are extremely serious. There are many effects that will happen in the future if global warming continues. That includes polar ice caps melting, economic consequences, warmer waters and more hurricanes, spread of diseases and earthquake.
Term RMS refers to the mathematical Root Mean Square which is an average of peaks and valleys of a materials surface profile. Ra stands for roughness average. Ra is a average of only peaks; therefore, to get an Ra, multiple your 3.2 to 6.3 by 2 to get 6.4 to 12.4 Ra. AF Kenton.
The peak level is the very tip of the sound wave, the highest point that the wave has reached. One might think it would make sense that the higher this point is, the louder we shall perceive the sound - not necessarily. RMS stands for 'root mean square' and is a way to measure the magnitude of varying quantities. It is the square root of the mean of the squares of the values. In simpler terms, our sensitivity to loudness is proportional to the average value of the various peak levels present in a given time. The RMS is a value given to the energy, or loudness of audio over time.