dislocation core
51Optical vortex — An optical vortex (also known as a screw dislocation or phase singularity) is a zero of an optical field, a point of zero intensity. Research into the properties of vortices has thrived since a comprehensive paper by Nye and Berry, in 1974,[1]… …
52Agriculture in Ethiopia — is the foundation of the country s economy, accounting for half of gross domestic product (GDP), 60% of exports, and 80% of total employment.Ethiopia s agriculture is plagued by periodic drought, soil degradation caused by overgrazing,… …
53Offset agreement — Defense offset agreements are legal trade practices in the aerospace and military industries. These commercial practices do not need state regulations but, since the purchasers are mostly military departments of sovereign nations comparable to… …
54Satellites naturels de Saturne — Montage préparé d après des photos prises par la sonde Voyager 1 en novembre 1980. Les satellites naturels de Saturne sont les corps qui sont en orbite autour de la planète Saturne, et précisément les cinquante trois dont l existence est… …
55Rome — /rohm/, n. 1. Harold (Jacob), born 1908, U.S. lyricist and composer. 2. Italian, Roma. a city in and the capital of Italy, in the central part, on the Tiber: ancient capital of the Roman Empire; site of Vatican City, seat of authority of the… …
56electrochemical reaction — ▪ chemistry Introduction any process either caused or accompanied by the passage of an electric current and involving in most cases the transfer of electrons between two substances one a solid and the other a liquid. Under ordinary… …
57Racism in Israel — Israeli protest in Pardes Hana against racism, 2010. The sign reads No to racism . Racism in Israel has been experienced by both Israeli Arabs and Israeli Jews. Israel has broad anti discrimination laws, which prohibit discrimination by both… …
58Demographics of South Korea — This article is about the demographic features of the population of South Korea, including population density, ethnicity, education level, health of the populace, economic status, religious affiliations and other aspects of the population.… …
59Hapkido — This article is about Martial art. For the film, see Hapkido (film). Hapkido Hapkido tournament in Korea …
60Micropsia — An illustration depicting the symptoms of micropsia from Lewis Carroll s 1865 novel Alice s Adventures in Wonderland. ICD 10 H …
