theoretical frequency
11High Frequency Active Auroral Research Program — HAARP is often confused with Project HARP, the High Altitude Research Project (a joint project of The Pentagon and the Canadian Department of National Defence).The High Frequency Active Auroral Research Program (HAARP) is an investigation project …
12Extremely low frequency — (ELF) is the band of radio frequencies from 3 to 30 Hz. ELF was used by the US Navy and Soviet/Russian Navy to communicate with submerged submarines.ExplanationBecause of the electrical conductivity of salt water, submarines are shielded from… …
13Occupancy frequency distribution — In macroecology and community ecology, an occupancy frequency distribution (OFD) is the distribution of the numbers of species occupying different numbers of areas.[1] It was first reported in 1918 by the Danish botanist Christen C. Raunkiær in… …
14Computational and Theoretical Chemistry —   Former name(s) Journal of Molecular Structure: THEOCHEM A …
15Journal of Experimental and Theoretical Physics — Infobox Journal discipline = Physics language = Russian, English abbreviation = JETP publisher = Maik Nauka/Interperiodica country = Russia frequency = openaccess = history = website = http://www.maik.ru/cgi perl/journal.pl?name=jetp page=main… …
16Collision frequency — Main article: Collision theory Collision frequency is defined in chemical kinetics, in the background of theoretical kinetics, as the average number of collisions between reacting molecules per unit of time. Its symbol is Z. For a gas phase… …
17Pearson's chi-squared test — (χ2) is the best known of several chi squared tests – statistical procedures whose results are evaluated by reference to the chi squared distribution. Its properties were first investigated by Karl Pearson in 1900.[1] In contexts where it is… …
18Stretched tuning — is a detail of musical tuning, applied to wire stringed musical instruments, older, non digital electric pianos (such as the Fender Rhodes piano and Wurlitzer electric piano), and sample based synthesizers based on these instruments, to… …
19Pearson's chi-square test — Pearson s chi square ( chi;2) test is the best known of several chi square tests – statistical procedures whose results are evaluated by reference to the chi square distribution. Its properties were first investigated by Karl Pearson. In contexts …
20AM broadcasting — is the process of radio broadcasting using amplitude modulation.HistoryAM was the dominant method of broadcasting during the first eighty years of the 20th century and remains widely used into the 21st.AM radio began with the first, experimental… …
