Search results for "Positron" - New World Encyclopedia
From New World Encyclopedia
- * Positron * Proton == Notes == == References == * Forward, Robert L. 2001. Mirror Matter: Pioneering Antimatter Physics. Lincoln, NE: Backinprint ...8 KB (1,066 words) - 01:57, 9 January 2023
- argon-40) (11.2 percent) by electron capture and positron emission, and it decays to stable 40Ca (calcium-40) (88.8 percent) by beta decay. The half-life ...18 KB (2,538 words) - 05:52, 30 November 2022
- bombard the nucleus and cause an electron and a positron to be formed, a process called pair production. ==Applications== === Compton scattering === ...11 KB (1,638 words) - 00:23, 8 January 2024
- work led Dirac to predict the existence of the positron, the electron's antiparticle, which he interpreted in terms of what came to be called ...20 KB (2,926 words) - 17:08, 26 March 2023
- years, decays to stable 40Ar (11.2%) by electron capture and positron emission, and it also transforms to stable 40Ca (88.8%) via beta decay ...11 KB (1,517 words) - 06:25, 12 August 2023
- Rhodium (chemical symbol Rh, atomic number 45) is a rare, silvery-white, inert metal. It is a member of the platinum group of elements and is ...13 KB (1,685 words) - 20:04, 8 December 2022
- Strontium (chemical symbol Sr, atomic number 38) is a soft, silvery white metallic element that occurs naturally in the minerals celestite and ...14 KB (1,860 words) - 21:04, 26 February 2023
- |- | colspan="2" align="center" | [[image:Ga,31.jpg|125px|Typical (melted blob)]] [[Image:Gallium1_640x480.jpg|130px|Crystallized ...15 KB (2,122 words) - 04:06, 18 April 2024
- Manganese (chemical symbol Mn, atomic number 25) is a gray-white metal that combines with other elements in various proportions. In nature, it ...14 KB (1,946 words) - 11:03, 9 March 2023
- Rubidium (chemical symbol Rb, atomic number 37) is a soft, silvery-white metallic element of the alkali metal group. Rb-87, a naturally occurring ...14 KB (1,892 words) - 20:57, 21 December 2022
- include LEP, the Large Electron Positron collider, which was stopped in 2001 and which is now dismantled to give way for LHC; and SPS, or the ...16 KB (2,386 words) - 08:56, 18 November 2022
- an electron cloud in a Penning trap, and positron plasmas. edu/papers/NNP4.pdf Creation and uses of positron plasmas]. Physics of Plasmas ...35 KB (5,311 words) - 07:58, 24 November 2022
- [[Image:Electron-positron-scattering.svg|350px|thumb|right|A Feynman diagram of the exchange of a virtual photon (symbolized by a wavy-line and ...34 KB (4,943 words) - 20:26, 27 September 2023
- Vanadium (chemical symbol V, atomic number 23) is a rare, silver-gray metal. It is found combined in several minerals and is one of the 26 elements ...15 KB (2,022 words) - 14:18, 3 May 2023
- or beta decay, when they eject an electron (or positron). After one of these decays, the resultant nucleus may be left in an excited state, and in this ...18 KB (2,740 words) - 00:29, 17 November 2022
- Zirconium (chemical symbol Zr, atomic number 40) is a strong, lustrous, gray-white metal that resembles titanium. It is obtained chiefly from ...16 KB (2,114 words) - 06:08, 13 June 2023
- Category:Politics and social sciences Category:Psychology In psychology, motivation refers to the initiation, direction, intensity, and persistence ...18 KB (2,702 words) - 17:02, 10 November 2022
- (by emitting an electron, emitting a positron, or capturing an electron ... (by emitting an electron, emitting a positron, or capturing an electron ...43 KB (6,283 words) - 22:03, 13 January 2024
- particle accelerator called the Large Electron-Positron Collider (LEP); superconductive cable (foreground) for the same amount of electric current used ...21 KB (3,041 words) - 23:46, 26 February 2023
- |- | Critical temperature || 1673 K (gray) 24.44 ? 34.76 24.64 553 | 596 | 646 | 706 | 781 | 874 | comment= color1=#cccc99 | color2=black ...21 KB (2,920 words) - 04:00, 15 August 2023
- events. Such virtual events—e.g. electron-positron pair production—cannot be directly observed but do have indirect effects that play a role in ...22 KB (3,234 words) - 17:14, 4 May 2023
- Sodium (chemical symbol Na, atomic number 11) is a member of a group of chemical elements known as alkali metals. Silvery in color, it is soft ...21 KB (3,204 words) - 21:54, 30 January 2023
- Obsessive-compulsive disorder (OCD) is a neurobiobehavioral mental disorder characterized by distressful, time-consuming thoughts (obsessions ...25 KB (3,597 words) - 16:09, 27 November 2022
- -0 to -3 (electron) or from +0 to +3 (positron). The electron anti-neutrino ... no matter particles, dark), and the positron) or asymmetric as in -1 ...42 KB (5,963 words) - 06:44, 13 June 2023
- Category:Politics and social sciences Category:Education Category:Psychology [[Image:Wolfgang-amadeus-mozart 1.jpg|thumb|200 px|Wolfgang Amadeus ...26 KB (3,861 words) - 01:14, 12 April 2023
- A complete atom, with a positron orbiting the nucleus, would be called antideuterium, but antideuterium has not been created as of 2005. The ...31 KB (4,687 words) - 10:07, 29 January 2024
- of synaptic reuptake). Similarly, a positron emission tomography (PET) is able to monitor glucose and oxygen metabolism as well as neurotransmitter ...28 KB (4,199 words) - 22:35, 20 November 2023
- Neuroscience is an interdisciplinary field in science that is organized around the study of the nervous system. As such, the field encompasses ...32 KB (4,338 words) - 04:35, 11 March 2023
- Titanium (chemical symbol Ti, atomic number 22) is a silvery-white, lustrous metal. Light and strong, it is resistant to corrosion, including ...27 KB (3,874 words) - 03:49, 1 May 2023
- In the 1990s, psychologists began using Positron Emission Tomograph (PET) and later, Functional magnetic resonance imaging (fMRI) to image the ...32 KB (4,749 words) - 18:24, 21 August 2023
- analysis tools like Electroencephalography (EEG), Positron Emission Tomography (PET), and Functional Magnetic Resonance Imaging (fMRI) to this study. ...35 KB (5,056 words) - 17:58, 26 March 2023
- and new technologies, such as computerized EEG, positron emission tomography, regional cerebral blood flow, and nuclear magnetic resonance imaging, are ...33 KB (4,676 words) - 00:39, 2 May 2023
- where e+ is a positron, γ is a gamma ray photon, νe is a neutrino, and H and He are isotopes of hydrogen and helium, respectively. The energy ...80 KB (12,078 words) - 15:50, 27 April 2023
- example with the pulsed Godiva device) and positron radiation date=March 2008 ) (for example, neutron activation analysis and potassium-argon dating. ...45 KB (6,704 words) - 00:40, 17 November 2022
- predicted the existence of the positron, which was discovered two years later in 1932. Despite this early success, the idea was soon abandoned ...37 KB (5,624 words) - 20:38, 21 April 2020
- [[File:Brain metabolism and drug addiction.jpg|thumb|400px|Brain positron emission tomography images that compare [[Human brain#Metabolism|brain ...52 KB (7,118 words) - 05:48, 15 June 2023
- Uranium (chemical symbol U, atomic number 92) is a silvery metallic chemical element in the actinide series of the periodic table. The heaviest ...48 KB (6,867 words) - 15:33, 16 January 2024
- (usually either a gamma-emitter or a positron emitter). There is a degree of overlap between nuclear medicine and radiology, as evidenced by ...53 KB (7,336 words) - 04:05, 9 November 2022
- , Asimov disliked the word "positron" as the term for the electron's antiparticle. As he explained in the nonfiction work Atom: ...53 KB (8,012 words) - 13:28, 6 March 2024
- predicting the existence of the positron (which had been postulated by Paul Dirac), a formulation that he however did not carry to its natural ...58 KB (8,808 words) - 01:10, 8 February 2023
