On Sat, 23 Mar 2002, Stefan Persson wrote:
> >Interesting. We haven't seen this character in technical publications.
> >Where did you run into it?
>
>
> SI unit: N/C
= V/m : electric field strength
> This double-struck capital E is sometimes used instead of a standard,
> italic capital E to distinguish it from energy. It's at least used for
> this purpose in Sweden. I'm sorry that I don't know the proper English
> Yes. In HTML this would be "<i>𝔼</i>".
Some physics/optics/EE book/journal authors/publishers may have resorted
to using double-struck capital Italic E for electric field (as a vector
quantity or sometimes even as a scalar) when they ran out of symbols.
I certainly have seen double-struck capital E used for electric field,
but double-struck capital Italic E I'm not sure of. I may have seen it,
but a quick survey in my bookshelves didn't turn up anything.
Jungshik Shin
