- #1

- 2

- 0

I'm referring to this one :

[itex]\int_l \vec E^* d\vec l =-\int_s \frac{\partial \vec B}{\partial t} d\vec S[/itex]

where [itex]\vec E^*[/itex] is defined as (i'm reporting the words of the book) :

[itex]\vec E - \vec v \times \vec B[/itex].

in particular what is [itex]\vec E[/itex] and what is its origin.

//I apologize for any syntax/grammar error, I have to improve my English, I'm Italian.