The Radiation Magnetic Force (\textbf{\textit{F}}$_{\mathbf{mR}})$.

In 1820 {\O}rsted discovered electric current produced Circular Magnetic Field (\textbf{\textit{CMF}}), originated from electron's movement, but not incorporated in theoretical works; the mutual interactions of electric fields and different magnetic fields, represents the attractive and repulsive forces resulted from \textit{field's interaction}; as electron's and proton's CMF hold magnetic energy, its transformed into Electromagnetic Radiation (\textbf{\textit{EM-R}}) when integrated with Electric Field during the Flip-Flop process; a relationship between frequency of \textbf{\textit{EM-R}} and a constant derived the Radiation Magnetic Force (F$_{\mathrm{mR}})$, embedded in EM-R, it's \begin{center} F$_{\mathrm{mR}}=\surd $y $v^{\mathrm{3}}$ \end{center} Where, $v$ is frequency, y is Constant of Radiation $=$ 1.9063181614361072009999849625463x10$^{\mathrm{-61}}$ N$^{\mathrm{2}}$. Hz$^{\mathrm{-3}}$. F$_{\mathrm{mR}}$ is similar to Planck's constant $h$; its absence forced Einstein to invoke photon; it remove electron in Photoelectric Effects, excited and ionized atoms, initiate production of secondary \textbf{\textit{EM-R}} in Compton Effect, help explain the double slit experiment; the poster is to better understand the nature and mechanisms of \textbf{\textit{EM-R}} and microscopic world, develop advance systems of lights among others.