循環と渦度との時間的變化に就いて
1939 年 17 巻 9 号 p. 376-377
詳細
1939 年 17 巻 9 号 p. 376-377
In this short note we have discussed the relations between dC/dt and ∂C/∂t, where C is defined as follows: C=∫s(udx+vdy+wdz).
For the purpose of numerical calculations the expressions for dC/dt and ∂C/∂t are given in the form of line integrals but for the physical concepts they are given by surface integrals.
