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51Mathematics 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… …
52List of minority cat breeds — See also: List of cat breeds The following is a list of minority cat breeds that do not have the recognition of major national or international cat registries, such as The International Cat Association (TICA) in the U.S., Europe, and Australasia …
53Onychophora — Temporal range: 40–0 Ma …
54Incense — Burning incense Incense (from Latin: incendere, to burn )[1] is composed of aromatic biotic materials, which release fragrant smoke when burned. The term incense refers to the substance itself, rather than to the odor that it produces. It is used …
55Kelvin probe force microscope — Kelvin probe force microscopy ( KPFM ), also known as surface potential microscopy, is a noncontact variant of atomic force microscopy (AFM) that was [http://dns.ntu ccms.ntu.edu.tw/references/APPL PHYS LETT 58 2921 1991.pdf invented] in 1991.… …
56Health and Disease — ▪ 2009 Introduction Food and Drug Safety. In 2008 the contamination of infant formula and related dairy products with melamine in China led to widespread health problems in children, including urinary problems and possible renal tube… …
57Bullet — This article is about firearms projectiles. For other uses, see Bullet (disambiguation). Lead soft point, boat tailed, copper jacketed bullets A bullet is a projectile propelled by a firearm, sling, or air gun. Bullets do not normally contain… …
58Spin polarized scanning tunneling microscopy — (SP STM) is a specialized application of scanning tunneling microscopy (STM) that can provide detailed information of magentic phenomena on the single atom scale additional to the atomic topology gained with STM. SP STM was developed by Roland… …
59Wakeboarding — is a surface water sport which involves riding a wakeboard over the surface of a body of water behind a boat. It was developed through a combination of water skiing, snowboarding and surfing techniques.The rider is towed behind a boat; typically… …
60Printed circuit board — Part of a 1983 Sinclair ZX Spectrum computer board; a populated PCB, showing the conductive traces, vias (the through hole paths to the other surface), and some mounted electrical components A printed circuit board, or PCB, is used to… …
