Ramanujan's modular equation

Analysing the propagation of EM wave for the circular tunnels and tunnels with a contained axial conductor, the formulas of attenuation and the mode equations are given and they are solved by the Muller s way.

對空圓形隧道及隧道中含有縱向導體的電磁波傳輸特性進行分析,給出了相應的衰減率計算公式及波模方程,并且采用Muller法對其進行求解。

From the equations of normal modes of crystals, the direction of the optical axis in biaxial crystals is found and the corresponding vectors of electric field and electric displacement are derived when lights travel in the direction of the optical axis.

從晶體的簡正模方程出發，求得在雙軸晶體中光軸方向，及當光線沿光軸方向行進時所對應的電場矢量和電位移矢量，并通過幾何作圖，證明所有折射光線在晶體內均在同一錐面上。