Wiktionary
n. A unit of gravitational gradient in the CGS system of units. 1 eotvos = 10-9 gal/cm.
Wikipedia
__NOTOC__ Eötvös is an old spelling of the Hungarian word ötvös, meaning " gold- and silversmith".
The eotvos is a unit of acceleration divided by distance that was used in conjunction with the older centimeter-gram-second system of units (cgs). The eotvos is defined as 1/1,000,000,000 gal per centimetre. The symbol of the eotvos unit is E.
In SI units or in cgs units, one eotvos equals 10 second.
The gravitational gradient of the Earth, that is, the change in the gravitational acceleration vector from one point on the Earth’s surface to another, is customarily measured in units of eotvos. The Earth's gravity gradient is dominated by the component due to Earth's near-spherical shape, which results in a vertical tensile gravity gradient of 3,080 E (an elevation increase of 1 m gives a decrease of gravity of about 0.3 mGal), and horizontal compressive gravity gradients of 1/2 that, or 1,540 E. Earth’s rotation perturbs this in a direction-dependent manner by about 5 E. Gravity gradient anomalies in mountainous areas can be as large as several hundred E.
The eotvos unit is named for the physicist Loránd Eötvös, who made pioneering studies of the gradient of the Earth’s gravitational field.
Category:Units of measurement
Eötvös is the remains of a lunar crater on the far side of the Moon. It lies to the north-northwest of the walled plain Roche, and east-southeast of the equally ruined Bolyai.
Only the northwestern section of the crater's rim survives, the remainder now forming a battered, uneven circular rise. The rim is nearly non-existent along the southeast where it joins an uneven plain reaching the rim of Roche. Small craters lie along the rim to the northeast and one to the southwest. The interior floor is relatively level, but marked by a number of small craterlets as well as palimpsests, meaning circular rises in the surface that are now scarcely recognizable as craters.