journal friction
111African music — Introduction the musical sounds and practices of all indigenous peoples of Africa, including the Berber in the Sahara and the San (Bushmen) and Khoikhoin (Hottentot) in Southern Africa. The music of European settler communities and that of… …
112onction — [ ɔ̃ksjɔ̃ ] n. f. • 1190; lat. unctio, de unguere « oindre » 1 ♦ Didact. (Relig.) Rite qui consiste à oindre une personne ou une chose (avec de l huile sainte, du saint chrême), en vue de lui conférer un caractère sacré, d attirer sur elle la… …
113Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …
114List of important publications in physics — Optics Book of Optics *Ibn al Haytham (Alhacen)Description: The Book of Optics (Arabic: Kitab al Manazir , Latin: De Aspectibus ) is a seven volume treatise on optics and physics, written by the Iraqi Arab Muslim scientist Ibn al Haytham… …
115Rolling resistance — Figure 1  Hard wheel rolling on and deforming a soft surface, resulting in the reaction force from the surface having a component that opposes the motion. Rolling resistance, sometimes called rolling friction or rolling drag, is the… …
116Nobel Prizes — ▪ 2009 Introduction Prize for Peace The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …
117Bose–Einstein condensate — A Bose–Einstein condensate (BEC) is a state of matter of bosons confined in an external potential and cooled to temperatures very near to absolute zero (val|0|u=K, val| 273.15|u=°C, or val| 459.67|u=°F ). Under such supercooled conditions, a… …
118Disc brake — Close up of a disc brake on a car On automobiles, disc brakes are often located with …
119Winter service vehicle — A winter service vehicle (WSV), or snow removal vehicle, is used to clear thoroughfares of ice and snow.cite news|url=http://news.bbc.co.uk/1/hi/magazine/6342887.stm|title=How do snowplough drivers get to work?|publisher=BBC News Magazine… …
120Preaspiration — In phonetics, preaspiration is a period of voicelessness or aspiration preceding the closure of a voiceless obstruent,cite web |url=http://www.anst.uu.se/pehel169/research.htm |title=Research Interests |accessdate=2007 03 07 |author=Helgason,… …
