{"type":"rich","version":"1.0","title":"Coulomb's law(vector notation)","html":"<span class=\"wb-embed wb-embed-math\" data-latex=\"\\vec F_{e}(B \\to A)=-\\frac{1}{4\\pi \\epsilon_0}\\frac{Q_AQ_B}{\\left\\| AB \\right\\|^2}\\widehat{AB}\">\\vec F_{e}(B \\to A)=-\\frac{1}{4\\pi \\epsilon_0}\\frac{Q_AQ_B}{\\left\\| AB \\right\\|^2}\\widehat{AB}</span><div class=\"wb-embed-note\"><p>where $A$,$B$ are point charges\n</p></div><footer><cite class=\"wb-embed-author\">Rong Martin-Siebler ZHOU</cite></footer>","width":640,"height":320}