Abstract
In this first paper, the influences of viscosity upon the wave motions were investigated in the case of isothermal change of air condition applying the first appoximation.
The results are as follows:-
The effects on amplitude of waves are classified in three cases; damped, stable, and unstable oscillations according to the wave length.
The effects on period of wave are also divided into three parts; longer or shorter than where no viscosity, and independent of viscosity.
The effects above mentioned are very trivial if we consider the viscosity as molecular except in very short waves, but if we consider it as eddy these effects are very remarkable particularlly in short waves.
