"Electromagnetics"의 두 판 사이의 차이

2009년 6월 27일 (토) 19:19 판

\[J^a = \left(c \rho, \mathbf{j} \right)\]

where

j the conventional current density.

@@ 1번째 줄: / 1번째 줄: @@
-<h5>four-vector </h5>
+<h5>Maxwell's equations</h5>
+<h5>electromagnetic field</h5>
+* an example of four-vector
 * gague field describing the photon
 * composed of a scalar electric potential and a three-vector magnetic potential
@@ 8번째 줄: / 15번째 줄: @@
-<h5>four-currents</h5>
+<h5>four-current</h5>
+* charge density and current density
+* http://en.wikipedia.org/wiki/Four-current
+: <math>J^a = \left(c \rho, \mathbf{j} \right)</math>
+where
-http://en.wikipedia.org/wiki/Four-current
+: c is the [http://en.wikipedia.org/wiki/Speed_of_light speed of light]
+: ρ the [http://en.wikipedia.org/wiki/Charge_density charge density]
+: j the conventional [http://en.wikipedia.org/wiki/Current_density current density].
+: a labels the [http://en.wikipedia.org/wiki/Spacetime space-time] [http://en.wikipedia.org/wiki/Dimension dimensions]
@@ 90번째 줄: / 107번째 줄: @@
 * http://ko.wikipedia.org/wiki/
+* http://en.wikipedia.org/wiki/Maxwell's_equations
 * http://en.wikipedia.org/wiki/electrical_current
 * http://en.wikipedia.org/wiki/Four-current