# Testing Symbol **URL:** \ **Category:** About This Message Board\ **Created:** [April 28, 2003, 7:54am UTC](https://boards.straightdope.com/t/testing-symbol/171626 "2003-04-28T07:54:32Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![grimpixie](https://avatars.discourse-cdn.com/v4/letter/g/ecb155/32.png) [@grimpixie](https://boards.straightdope.com/u/grimpixie)\ **Post date:** [April 28, 2003, 7:54am UTC](https://boards.straightdope.com/t/testing-symbol/171626/1 "2003-04-28T07:54:32Z")
1. [symbol]Ñ[/symbol] x H = [symbol]e[/symbol][sub]0[/sub] [symbol]d[/symbol]E/[symbol]d[/symbol]t + j 2. [symbol]Ñ[/symbol] x E = - [symbol]m[/symbol][sub]0[/sub] [symbol]d[/symbol]H/[symbol]d[/symbol]t 3. [symbol]Ñ[/symbol] . H = 0 4. [symbol]Ñ[/symbol] . E = [symbol]r[/symbol]/[symbol]e[/symbol][sub]0[/sub] ---
**Author:** ![grimpixie](https://avatars.discourse-cdn.com/v4/letter/g/ecb155/32.png) [@grimpixie](https://boards.straightdope.com/u/grimpixie)\ **Post date:** [April 28, 2003, 7:58am UTC](https://boards.straightdope.com/t/testing-symbol/171626/2 "2003-04-28T07:58:22Z")
🙂 God said… > [@](#): > > [symbol]Ñ[/symbol] x H = [symbol]e[/symbol][sub]0[/sub] [symbol]d[/symbol]E/[symbol]d[/symbol]t + j > [symbol]Ñ[/symbol] x E = - [symbol]m[/symbol][sub]0[/sub] [symbol]d[/symbol]H/[symbol]d[/symbol]t > [symbol]Ñ[/symbol] . H = 0 > [symbol]Ñ[/symbol] . E = [symbol]r[/symbol]/[symbol]e[/symbol][sub]0[/sub] and there was light… ---
**Author:** ![Achernar](https://avatars.discourse-cdn.com/v4/letter/a/e274bd/32.png) [@Achernar](https://boards.straightdope.com/u/Achernar)\ **Post date:** [April 28, 2003, 8:05am UTC](https://boards.straightdope.com/t/testing-symbol/171626/3 "2003-04-28T08:05:50Z")
I can only assume that’s Maxwell’s Equations. Pretty cool, but FYI, it won’t look like that to everyone. I use Netscape, and here’s how it looks to me: > [@](#): > > 1. Ñ x H = e[sub]0[/sub] dE/dt + j > 2. Ñ x E = - m[sub]0[/sub] dH/dt > 3. Ñ . H = 0 > 4. Ñ . E = r/e[sub]0[/sub] ---
**Author:** ![Desmostylus](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@Desmostylus](https://boards.straightdope.com/u/Desmostylus)\ **Post date:** [April 28, 2003, 10:30am UTC](https://boards.straightdope.com/t/testing-symbol/171626/4 "2003-04-28T10:30:06Z")
> [@](#): > > \*Originally posted by grimpixie \* > > 1. [symbol]Ñ[/symbol] x H = [symbol]e[/symbol][sub]0[/sub] [symbol]d[/symbol]E/[symbol]d[/symbol]t + j > 2. [symbol]Ñ[/symbol] x E = - [symbol]m[/symbol][sub]0[/sub] [symbol]d[/symbol]H/[symbol]d[/symbol]t > 3. [symbol]Ñ[/symbol] . H = 0 > 4. [symbol]Ñ[/symbol] . E = [symbol]r[/symbol]/[symbol]e[/symbol][sub]0[/sub] Try this: 1. [symbol]Ñ[/symbol] x H = ε[sub]0[/sub] ∂E/∂t + j 2. [symbol]Ñ[/symbol] x E = - μ[sub]0[/sub] ∂H/∂t 3. [symbol]Ñ[/symbol] . H = 0 4. [symbol]Ñ[/symbol] . E = ρ/ε[sub]0[/sub] How does that look in Netscape? And anyone know another way to do the del operator? ---
**Author:** ![darksight](https://avatars.discourse-cdn.com/v4/letter/d/3da27b/32.png) [@darksight](https://boards.straightdope.com/u/darksight)\ **Post date:** [April 28, 2003, 10:51am UTC](https://boards.straightdope.com/t/testing-symbol/171626/5 "2003-04-28T10:51:14Z")
ƒ ---
**Author:** ![grimpixie](https://avatars.discourse-cdn.com/v4/letter/g/ecb155/32.png) [@grimpixie](https://boards.straightdope.com/u/grimpixie)\ **Post date:** [April 28, 2003, 11:52am UTC](https://boards.straightdope.com/t/testing-symbol/171626/6 "2003-04-28T11:52:47Z")
> [@](#): > > \*Originally posted by Achernar \* > \*\*I can only assume that’s Maxwell’s Equations. Pretty cool, but FYI, it won’t look like that to everyone. I use Netscape, and here’s how it looks to me: \*\* ☹ I’d thought Symbol was pretty much universal… Ah well Grim ---
**Author:** ![Achernar](https://avatars.discourse-cdn.com/v4/letter/a/e274bd/32.png) [@Achernar](https://boards.straightdope.com/u/Achernar)\ **Post date:** [April 28, 2003, 4:06pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/7 "2003-04-28T16:06:33Z")
To do a del operator in Netscape you can use: ∇ = ∇ But I don’t think is universal, either. ---
**Author:** ![Desmostylus](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@Desmostylus](https://boards.straightdope.com/u/Desmostylus)\ **Post date:** [April 28, 2003, 4:24pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/8 "2003-04-28T16:24:38Z")
> [@](#): > > \*Originally posted by Achernar \* > \*\*To do a del operator in Netscape you can use: > > ∇ = ∇ > > But I don’t think is universal, either. \*\* That shows up as a square in IE. How was the rest of my post? Did rho, epsilon, mu and the partial differential show up correctly? ---
**Author:** ![Achernar](https://avatars.discourse-cdn.com/v4/letter/a/e274bd/32.png) [@Achernar](https://boards.straightdope.com/u/Achernar)\ **Post date:** [April 28, 2003, 4:27pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/9 "2003-04-28T16:27:55Z")
Yes they did. Although the dot product looked like a period. ---
**Author:** ![Tars\_Tarkas](https://avatars.discourse-cdn.com/v4/letter/t/6a8cbe/32.png) [@Tars\_Tarkas](https://boards.straightdope.com/u/Tars_Tarkas)\ **Post date:** [April 28, 2003, 4:46pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/10 "2003-04-28T16:46:23Z")
test ---
**Author:** ![dlknox](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@dlknox](https://boards.straightdope.com/u/dlknox)\ **Post date:** [April 28, 2003, 5:53pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/11 "2003-04-28T17:53:15Z")
tests: 😉 🙂 😛 :B :E 😃 ---
**Author:** ![dlknox](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@dlknox](https://boards.straightdope.com/u/dlknox)\ **Post date:** [April 28, 2003, 6:03pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/12 "2003-04-28T18:03:27Z")
😛 😮 :o ---
**Author:** ![dlknox](https://avatars.discourse-cdn.com/v4/letter/d/c4cdca/32.png) [@dlknox](https://boards.straightdope.com/u/dlknox)\ **Post date:** [April 28, 2003, 6:27pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/13 "2003-04-28T18:27:14Z")
:mad: :smack: ---
**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\ **Post date:** [April 28, 2003, 9:11pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/14 "2003-04-28T21:11:32Z")
> [@](#): > > How was the rest of my post? Did rho, epsilon, mu and the partial differential show up correctly? And for some reason, your **B** for the magnetic field came out looking like an **H** , and we all know that’s not right. After all, it’s all vacuum anyway. \ You might also try, by the way, just using a superscript period for a dot product. It won’t copy and paste well, but it **will** at least look right on (almost) all browsers. ---
**Author:** ![Achernar](https://avatars.discourse-cdn.com/v4/letter/a/e274bd/32.png) [@Achernar](https://boards.straightdope.com/u/Achernar)\ **Post date:** [April 28, 2003, 10:36pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/15 "2003-04-28T22:36:01Z")
I think that just using · will work too. Let’s see: A · B ---
**Author:** ![Desmostylus](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@Desmostylus](https://boards.straightdope.com/u/Desmostylus)\ **Post date:** [April 29, 2003, 7:16am UTC](https://boards.straightdope.com/t/testing-symbol/171626/16 "2003-04-29T07:16:56Z")
**D** = ε[sub]o[/sub] **E** + **P** **H** = **B** /μ[sub]o[/sub] − **M** [symbol]Ñ[/symbol] x **H** = ∂ **D** /∂t + **J** [symbol]Ñ[/symbol] x **E** = − ∂ **B** /∂t [symbol]Ñ[/symbol] · **B** = 0 [symbol]Ñ[/symbol] · **D** = ρ Happy with that version, **Chronos**? And if it _was_ free space, I could write: [symbol]Ñ[/symbol][sup]2[/sup] x **B** = μ[sub]o[/sub]ε[sub]o[/sub] ∂[sup]2[/sup] **B** /∂t[sup]2[/sup] [symbol]Ñ[/symbol][sup]2[/sup] x **E** = μ[sub]o[/sub]ε[sub]o[/sub] ∂[sup]2[/sup] **E** /∂t[sup]2[/sup] ---
**Author:** ![Desmostylus](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@Desmostylus](https://boards.straightdope.com/u/Desmostylus)\ **Post date:** [April 29, 2003, 12:15pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/17 "2003-04-29T12:15:45Z")
Alternatively, in Heaviside-Lorentz: **D** = **E** + **P** **H** = **B** − **M** [symbol]Ñ[/symbol] x **H** = (∂ **D** /∂t + **J** )/_c_ [symbol]Ñ[/symbol] x **E** = (-∂ **B** /∂t)/_c_ [symbol]Ñ[/symbol] · **B** = 0 [symbol]Ñ[/symbol] · **D** = ρ ---
**Author:** ![Desmostylus](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@Desmostylus](https://boards.straightdope.com/u/Desmostylus)\ **Post date:** [April 29, 2003, 1:17pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/18 "2003-04-29T13:17:18Z")
May as well do the others, too. Gaussian: **D** = **E** + 4[symbol]p[/symbol] **P** **H** = **B** − 4[symbol]p[/symbol] **M** [symbol]Ñ[/symbol] x **H** = (∂ **D** /∂t + 4[symbol]p[/symbol] **J** )/_c_ [symbol]Ñ[/symbol] x **E** = (-∂ **B** /∂t)/_c_ [symbol]Ñ[/symbol] · **B** = 0 [symbol]Ñ[/symbol] · **D** = 4[symbol]p[/symbol]ρ ---
**Author:** ![Desmostylus](https://avatars.discourse-cdn.com/v4/letter/d/c57346/32.png) [@Desmostylus](https://boards.straightdope.com/u/Desmostylus)\ **Post date:** [April 29, 2003, 1:31pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/19 "2003-04-29T13:31:39Z")
cgs esu: **D** = **E** + 4[symbol]p[/symbol] **P** **H** = _c_[sup]2[/sup] **B** − 4[symbol]p[/symbol] **M** [symbol]Ñ[/symbol] x **H** = ∂ **D** /∂t + 4[symbol]p[/symbol] **J** [symbol]Ñ[/symbol] x **E** = -∂ **B** /∂t [symbol]Ñ[/symbol] · **B** = 0 [symbol]Ñ[/symbol] · **D** = 4[symbol]p[/symbol]ρ And, lastly, cgs emu: **D** = **E** /_c_[sup]2[/sup] + 4[symbol]p[/symbol] **P** **H** = **B** − 4[symbol]p[/symbol] **M** [symbol]Ñ[/symbol] x **H** = ∂ **D** /∂t + 4[symbol]p[/symbol] **J** [symbol]Ñ[/symbol] x **E** = -∂ **B** /∂t [symbol]Ñ[/symbol] · **B** = 0 [symbol]Ñ[/symbol] · **D** = 4[symbol]p[/symbol]ρ ---
**Author:** ![ultrafilter](https://avatars.discourse-cdn.com/v4/letter/u/3d9bf3/32.png) [@ultrafilter](https://boards.straightdope.com/u/ultrafilter)\ **Post date:** [April 29, 2003, 2:58pm UTC](https://boards.straightdope.com/t/testing-symbol/171626/20 "2003-04-29T14:58:32Z")
Buncha fuggin’ geeks. [Next page](https://boards.straightdope.com/t/testing-symbol/171626.md?page=2)