magnetization reversal
41Neutron spin echo — Science with Neutrons Foundations Neutron temperature Flux · Radiation  …
42Einstein-de Haas effect — The Einstein de Haas effect, or the Richardson effect (after Owen Willans Richardson), is a physical phenomenon delineated by Albert Einstein and Wander Johannes de Haas in Germany in the mid 1910 s.DescriptionThe effect corresponds to the… …
43Motonori Matuyama — (松山 基範, Matsuyama Motonori?, October 25, 1884 – January 27, 1958) was a Japanese geophysicist who was the first to surmise that the Earth s magnetic field had undergone reversals in the past. The era of reversed polarity preceding the current… …
44Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
45Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass …
46VHS — Infobox media name = Video Home System | caption = Top view of VHS cassette with ruler for scale type = Video recording media encoding = FM on magnetic tape common lengths = 120, 160 minutes (Standard Play Mode) unusual lengths = 5, 10, 15, 30,… …
47Magnetometer — A magnetometer is a measuring instrument used to measure the strength or direction of a magnetic field either produced in the laboratory or existing in nature. Some countries such as the USA, Canada and Australia classify the more sensitive… …
48Rayleigh law — The Rayleigh law describes the behaviour of ferromagnetic materials at low fields.Ferromagnetic materials consist of magnetic domains. When a small external field H is applied, domains parallel to the external field start to grow. In this region …
49Metamaterial — Negative index metamaterial array configuration, which was constructed of copper split ring resonators and wires mounted on interlocking sheets of fiberglass circuit board. The total array consists of 3 by 20×20 unit cells with overall dimensions …
50earth — /errth/, n. 1. (often cap.) the planet third in order from the sun, having an equatorial diameter of 7926 mi. (12,755 km) and a polar diameter of 7900 mi. (12,714 km), a mean distance from the sun of 92.9 million mi. (149.6 million km), and a… …
