positive rays
111Greisen–Zatsepin–Kuzmin limit — The Greisen–Zatsepin–Kuzmin limit (GZK limit) is a theoretical upper limit on the energy of cosmic rays (high energy charged particles from space) coming from distant sources. The limit is 5×1019 eV, or about 8 joules. The limit is set by slowing …
112Prostate cancer — is a disease in which cancer develops in the prostate, a gland in the male reproductive system. It occurs when cells of the prostate mutate and begin to multiply out of control. These cells may spread (metastasize) from the prostate to other… …
113SOFAR channel — The SOFAR channel (short for Sound Frequency and Ranging channel), or deep sound channel (DSC),[1] is a horizontal layer of water in the ocean at which depth the speed of sound is minimal. The SOFAR channel acts as a waveguide for sound, and low… …
114Conoscopy — (from Ancient Greek κῶνος (konos) cone, spinning top, pine cone and σκοπέω (skopeo) examine, inspect, look to or into, consider ) is an optical technique to make observations of a transparent specimen in a cone of converging rays of light. The… …
115Matrix (mathematics) — Specific elements of a matrix are often denoted by a variable with two subscripts. For instance, a2,1 represents the element at the second row and first column of a matrix A. In mathematics, a matrix (plural matrices, or less commonly matrixes)… …
116mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph …
117Ionosphere — The ionosphere is a part of the upper atmosphere, comprising portions of the mesosphere, thermosphere and exosphere, distinguished because it is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner …
118Penrose-Hawking singularity theorems — The Penrose Hawking singularity theorems are a set of results in general relativity which attempt to answer the question of whether gravity is necessarily singular. These theorems answer this question affirmatively for matter satisfying… …
1192007 in baseball — Year in baseball this year = 2007 ChampionsMajor League Baseball*Regular Season Champions*World Series Champion Boston Red Sox *Postseason October 2 to October 28Click on any series score to link to that series page. Higher seed had home field… …
120List of scientists opposing the mainstream scientific assessment of global warming — This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries …
