The problem is $\nabla \cdot D = 0$, $E=-\nabla \phi$ for a continuous scalar potential function $\phi$. $D= \epsilon E$. $D_{\perp}$ and $E_{\parallel}$ are ...

Static electricity with balloon and hair Static electricity with balloon and hair illustration Antique illustration of battery and electricity storage Antique illustration of battery and electricity ...

IN this volume the author describes his universal electroscope, and gives descriptions of numerous experiments, ranging from elementary experiments in electrostatics to measurements of ionisation ...

Benjamin Franklin and electrostatics www.tufts.edu/as/wright_center/fellows/bob_morse_04 Suitable for KS5 pupils & KS4/5 teachers This website, set up by Bob Morse of ...