from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A unit of magnetic field strength equal to one millionth of a gauss
from The Century Dictionary and Cyclopedia
- n. In electricity, one millionth part of a gauss or of a c. g. s. unit: a practical unit of magnetic induction.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a unit of magnetic flux density equal to one millionth of a gauss
A microgauss is one millionth of a gauss, a unit of magnetic field strength popular among astronomers and geophysicists.
Earth's magnetic field is about 0.5 gauss or 500,000 microgauss.
The magnetic field is not only stronger than anticipated-3. 7 to 5.5 microgauss-it's also tilted off the galactic plane of the Milky Way by about 30 degrees,
"Voyager data show that the Fluff is much more strongly magnetized than anyone had previously suspected - between 4 and 5 microgauss," said Merav Opher, a NASA Heliophysics Guest Investigator from George Mason University.
Astrophysical magnetic fields are often measured in units of gauss; the Earth has a magnetic field of approximately 0.5 gauss (or 500,000 microgauss).
Therefore, 4 to 5 microgauss may seem pretty weak in comparison, but this field covers astonishing scales, appearing to wrap around a very tenuous hydrogen/helium gas, possibly helping the Local Fluff maintain its structure.