ISO 31-5
1 reference results for: ISO 31-5
Wikipedia
ISO 31-5 is the part of international standard ISO 31 that defines names and symbols for quantities and units related to electricity and magnetism.
Some of its definitions are below, with values taken from NIST values of the constants:
| Name | Symbol | Definition | Value |
|---|---|---|---|
| Speed of light in vacuum | c0 | 299 792 458 m s−1 | 299 792 458 m s−1 |
| Magnetic constant | μ0 | 4π × 10−7 N A−2 | 12.566 370 614... x 10−7 N A−2 |
| Electric constant | ε0 | 8.854 187 817... x 10−12 F m−1 | |
| Characteristic impedance of vacuum | Z0 | μ0 c0 | 376.730 313 461...Ω |
Wikipedia, the free encyclopedia © 2001-2006 Wikipedia contributors (Disclaimer)
This article is licensed under the GNU Free Documentation License.
Last updated on Friday February 29, 2008 at 14:23:38 PST (GMT -0800)
View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation
This article is licensed under the GNU Free Documentation License.
Last updated on Friday February 29, 2008 at 14:23:38 PST (GMT -0800)
View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation
Share This:
Copyright © 2008, Dictionary.com, LLC. All rights reserved.