Gaussian units: Difference between revisions
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imported>Paul Wormer No edit summary |
imported>Paul Wormer (Undo revision 100365026 by Paul Wormer (Talk)) |
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==Conversion of | Gaussian units are the same as cgs emu for magnetostatics. | ||
Mx = [[maxwell (unit)|maxwell]], G = [[gauss (unit)|gauss]], Oe = [[oersted (unit)|oersted ]]; Wb = [[weber (unit)|weber]], V = [[volt]], s = [[second]], T = [[tesla (unit)|tesla]], m = [[meter]], A = [[ampere (unit)|ampere]], J = [[joule (unit)|joule]], kg = [[kilogram]], H = [[henry (unit)|henry]] | |||
==Conversion of magnetic units== | |||
<div align="center"> | <div align="center"> | ||
<table | <table> | ||
<tr>< | <tr><th colspan="4"><hr></tr> | ||
<tr> | <tr><td>Symbol<td align="center">Property <td align="center">Gaussian → SI </tr> | ||
<tr><th colspan="4"><hr></tr> | |||
<tr> | <tr><td> Φ <td> [[magnetic flux]] <td> 1 Mx → 10<sup>−8</sup> Wb = 10<sup>−8</sup> V⋅s </tr> | ||
<tr> | <tr><td> <i>B</i> <td> [[magnetic flux density]] <td> 1 G → 10<sup>−4</sup> T = 10<sup>−4</sup> Wb/m<sup>2</sup> </tr> | ||
<tr> | <tr><td> <td> [[magnetic induction]] <td> </tr> | ||
<tr> | <tr><td> <i>H</i> <td> [[magnetic field]] <td> 1 Oe → 10<sup>3</sup>/(4π) A/m </tr> | ||
<tr> | <tr><td> <i>m</i> <td> [[magnetic moment]] <td> 1 erg/G = 1 emu → 10<sup>−3</sup> A⋅m<sup>2</sup> = 10<sup>−3</sup> J/T </tr> | ||
<tr> | <tr><td> <i>M</i> <td> [[magnetization]] <td> 1 erg/(G⋅cm<sup>3</sup>) = 1 emu/cm<sup>3</sup> → 10<sup>3</sup> A/m </tr> | ||
<tr> | <tr><td> 4π<i>M</i> <td> [[magnetization]] <td> 1 G → 10<sup>3</sup>/(4π) A/m </tr> | ||
<tr> | <tr><td> σ <td> [[mass magnetization]] <td> 1 erg/(G⋅g) = 1 emu/g → 1 A⋅m<sup>2</sup>/kg </tr> | ||
<tr> | <tr><td> <td> [[specific magnetization]] <td> </tr> | ||
<tr> | <tr><td> <i>j</i> <td> [[magnetic dipole moment]] <td> 1 erg/G = 1 emu → 4π ⋅ 10<sup>−10</sup> Wb⋅m </tr> | ||
< | <tr><td> <i>J</i> <td> [[magnetic polarization]] <td> 1 erg/(G⋅cm<sup>3</sup>) = 1 emu/cm<sup>3</sup> → 4π ⋅ 10<sup>−4</sup> T </tr> | ||
<tr><td> χ, κ <td> [[susceptibility]] <td> 1 → 4π </tr> | |||
<tr><td> χ<sub>ρ</sub> <td> [[mass susceptibility]] <td> 1 cm<sup>3</sup>/g → 4π ⋅ 10<sup>−3</sup> m<sup>3</sup>/kg </tr> | |||
<tr><td> μ <td> [[permeability]] <td> 1 → 4π ⋅ 10<sup>−7</sup> H/m = 4π ⋅ 10<sup>−7</sup> Wb/(A⋅m)</tr> | |||
<tr><td> μ<sub>r</sub> <td> [[relative permeability]] <td> μ → μ<sub>r</sub> </tr> | |||
<tr><td> <i>w, W</i> <td> [[energy density]] <td> 1 erg/cm<sup>3</sup> → 10<sup>−1</sup> J/m<sup>3</sup> </tr> | |||
<tr><td> <i>N, D</i> <td> [[demagnetizing factor]] <td> 1 → 1/(4π) </tr> | |||
</table> | </table> | ||
</div> | </div> | ||
Revision as of 09:50, 13 July 2008
Gaussian units are the same as cgs emu for magnetostatics.
Mx = maxwell, G = gauss, Oe = oersted ; Wb = weber, V = volt, s = second, T = tesla, m = meter, A = ampere, J = joule, kg = kilogram, H = henry
Conversion of magnetic units
| Symbol | Property | Gaussian → SI | |
| Φ | magnetic flux | 1 Mx → 10−8 Wb = 10−8 V⋅s | |
| B | magnetic flux density | 1 G → 10−4 T = 10−4 Wb/m2 | |
| magnetic induction | |||
| H | magnetic field | 1 Oe → 103/(4π) A/m | |
| m | magnetic moment | 1 erg/G = 1 emu → 10−3 A⋅m2 = 10−3 J/T | |
| M | magnetization | 1 erg/(G⋅cm3) = 1 emu/cm3 → 103 A/m | |
| 4πM | magnetization | 1 G → 103/(4π) A/m | |
| σ | mass magnetization | 1 erg/(G⋅g) = 1 emu/g → 1 A⋅m2/kg | |
| specific magnetization | |||
| j | magnetic dipole moment | 1 erg/G = 1 emu → 4π ⋅ 10−10 Wb⋅m | |
| J | magnetic polarization | 1 erg/(G⋅cm3) = 1 emu/cm3 → 4π ⋅ 10−4 T | |
| χ, κ | susceptibility | 1 → 4π | |
| χρ | mass susceptibility | 1 cm3/g → 4π ⋅ 10−3 m3/kg | |
| μ | permeability | 1 → 4π ⋅ 10−7 H/m = 4π ⋅ 10−7 Wb/(A⋅m) | |
| μr | relative permeability | μ → μr | |
| w, W | energy density | 1 erg/cm3 → 10−1 J/m3 | |
| N, D | demagnetizing factor | 1 → 1/(4π) | |