pointlike
31Classical mechanics — This article is about the physics sub field. For the book written by Herbert Goldstein and others, see Classical Mechanics (book). Classical mechanics …
32light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …
33nebula — nebular, adj. /neb yeuh leuh/, n., pl. nebulae / lee , luy /, nebulas. 1. Astron. a. Also called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula …
34particle physics — the branch of physics that deals with the properties and behavior of elementary particles. Cf. high energy physics. [1945 50] * * * or high energy physics Study of the fundamental subatomic particles, including both matter (and antimatter) and… …
35puncture — puncturable, adj. punctureless, adj. puncturer, n. /pungk cheuhr/, n., v., punctured, puncturing. n. 1. the act of piercing or perforating, as with a pointed instrument or object. 2. a hole or mark so made. 3. Zool. a small pointlike depression.… …
36subatomic particle — or elementary particle Any of various self contained units of matter or energy. Discovery of the electron in 1897 and of the atomic nucleus in 1911 established that the atom is actually a composite of a cloud of electrons surrounding a tiny but… …
37Mathematics 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… …
38Witten, Edward — ▪ 2005 Edward Witten, a theoretical physicist who had a hand in many of the important developments in string theory from the mid 1980s onward, was named by Time magazine as one of the world s 100 most influential people of 2004. String… …
39Friedman, Jerome Isaac — ▪ American physicist born March 28, 1930, Chicago, Ill., U.S. American physicist who, together with Richard E. Taylor (Taylor, Richard E.) and Henry W. Kendall (Kendall, Henry Way), received the Nobel Prize for Physics in 1990 for their… …
40sample preparation — ▪ chemistry Introduction in analytical chemistry (chemistry), the processes in which a representative piece of material is extracted from a larger amount and readied for analysis. Sampling and sample preparation have a unique meaning and special …
