Abohm: Difference between revisions
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| label4 = Symbol | data4 = abΩ |
| label4 = Symbol | data4 = abΩ |
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| label5 = Named after | data5 = [[Georg Ohm]] |
| label5 = Named after | data5 = [[Georg Ohm]] |
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| label6 = In CGS base units | data6 = |
| label6 = In CGS base units | data6 = cm/s |
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| header7 = Conversions |
| header7 = Conversions |
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| data8 = <tr class="nowrap"><td>{{val|1|u=abΩ}} ''in ...''</td><td>''... corresponds to ...''</td></tr> |
| data8 = <tr class="nowrap"><td>{{val|1|u=abΩ}} ''in ...''</td><td>''... corresponds to ...''</td></tr> |
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The '''abohm''' is the [[Centimetre–gram–second system of units#CGS approach to electromagnetic units|derived]] unit of electrical resistance in the [[Centimetre–gram–second system of units#Electromagnetic units in various CGS systems|emu-cgs ''(centimeter-gram-second)'']] system of units (emu stands for "electromagnetic units"). One abohm corresponds to 10<sup>−9</sup> [[ohm]]s in the [[International System of Units|SI system of units]], which is a [[Nano-|nano]]ohm. |
The '''abohm''' is the [[Centimetre–gram–second system of units#CGS approach to electromagnetic units|derived]] unit of electrical resistance in the [[Centimetre–gram–second system of units#Electromagnetic units in various CGS systems|emu-cgs ''(centimeter-gram-second)'']] system of units (emu stands for "electromagnetic units"). One abohm corresponds to 10<sup>−9</sup> [[ohm]]s in the [[International System of Units|SI system of units]], which is a [[Nano-|nano]]ohm. |
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The emu-cgs (or "electromagnetic cgs") units are one of several systems of electromagnetic units within the [[centimetre gram second system of units]]; others include esu-cgs, [[Gaussian units]], and [[ |
The emu-cgs (or "electromagnetic cgs") units are one of several systems of electromagnetic units within the [[centimetre gram second system of units]]; others include esu-cgs, [[Gaussian units]], and [[Heaviside–Lorentz units]]. In these other systems, the abohm is ''not'' one of the units. |
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When a current of one [[abampere]] (1 abA) flows through a resistance of 1 abohm, the resulting potential difference across the component is one [[abvolt]] (1 abV). |
When a current of one [[abampere]] (1 abA) flows through a resistance of 1 abohm, the resulting potential difference across the component is one [[abvolt]] (1 abV). |
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The name abohm was introduced by [[Arthur E._Kennelly|Kennelly]] in 1903 as a short name for the long name ''(absolute) electromagnetic cgs unit of resistance'' that was in use since the adoption of the cgs system in 1875.<ref>A.E. Kennelly (1903) [https://dokumen.tips/documents/magnetic-units-and-other-subjects-that-might-occupy-attention-at-the-next-international.html "Magnetic units and other subjects that might occupy attention at the next international electrical congress"] ''20th Annual Convention of the American Institute of Electrical Engineers, 1903''</ref> The abohm was [[Coherence_(units_of_measurement)|coherent]] with the emu-cgs system, in contrast to the ohm, the [[Centimetre–gram–second_system_of_units# |
The name abohm was introduced by [[Arthur E._Kennelly|Kennelly]] in 1903 as a short name for the long name ''(absolute) electromagnetic cgs unit of resistance'' that was in use since the adoption of the cgs system in 1875.<ref>A.E. Kennelly (1903) [https://dokumen.tips/documents/magnetic-units-and-other-subjects-that-might-occupy-attention-at-the-next-international.html "Magnetic units and other subjects that might occupy attention at the next international electrical congress"] ''20th Annual Convention of the American Institute of Electrical Engineers, 1903''</ref> The abohm was [[Coherence_(units_of_measurement)|coherent]] with the emu-cgs system, in contrast to the ohm, the [[Centimetre–gram–second_system_of_units#Practical CGS units|practical unit]] of resistance that had been adopted too in 1875. |
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==References== |
==References== |
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Latest revision as of 00:50, 26 July 2023
| abohm | |
|---|---|
| Unit system | CGS-EMU |
| Unit of | electrical resistance |
| Symbol | abΩ |
| Named after | Georg Ohm |
| In CGS base units | cm/s |
| Conversions | |
| 1 abΩ in ... | ... corresponds to ... |
| SI units | 10−9 Ω |
The abohm is the derived unit of electrical resistance in the emu-cgs (centimeter-gram-second) system of units (emu stands for "electromagnetic units"). One abohm corresponds to 10−9 ohms in the SI system of units, which is a nanoohm.
The emu-cgs (or "electromagnetic cgs") units are one of several systems of electromagnetic units within the centimetre gram second system of units; others include esu-cgs, Gaussian units, and Heaviside–Lorentz units. In these other systems, the abohm is not one of the units.
When a current of one abampere (1 abA) flows through a resistance of 1 abohm, the resulting potential difference across the component is one abvolt (1 abV).
The name abohm was introduced by Kennelly in 1903 as a short name for the long name (absolute) electromagnetic cgs unit of resistance that was in use since the adoption of the cgs system in 1875.[1] The abohm was coherent with the emu-cgs system, in contrast to the ohm, the practical unit of resistance that had been adopted too in 1875.
References[edit]
- The McGraw Hill Dictionary Of Scientific and Technical Terms, ISBN 0-07-045257-1.
- ^ A.E. Kennelly (1903) "Magnetic units and other subjects that might occupy attention at the next international electrical congress" 20th Annual Convention of the American Institute of Electrical Engineers, 1903
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