two-frequency
1two-frequency laser — dvidažnis lazeris statusas T sritis radioelektronika atitikmenys: angl. two frequency laser vok. Zweifrequenzbetriebslaser, m rus. двухчастотный лазер, m pranc. laser à bifréquence, m …
2Two-dimensional nuclear magnetic resonance spectroscopy — (2D NMR) is a set of nuclear magnetic resonance spectroscopy (NMR) methods which give data plotted in a space defined by two frequency axes rather than one. Types of 2D NMR include correlation spectroscopy (COSY), J spectroscopy, exchange… …
3Two-photon absorption — (TPA) is the simultaneous absorption of two photons of identical or different frequencies in order to excite a molecule from one state (usually the ground state) to a higher energy electronic state. The energy difference between the involved… …
4Frequency (producer) — Frequency Background information Birth name Bryan Fryzel Born January 4, 1983 …
5Frequency-dependent selection — is the term given to an evolutionary process where the fitness of a phenotype is dependent on its frequency relative to other phenotypes in a given population. In positive frequency dependent selection (or purifying frequency dependent selection) …
6Frequency response — is the measure of any system s spectrum response at the output to a signal of varying frequency (but constant amplitude) at its input. In the audible range it is usually referred to in connection with electronic amplifiers, microphones and… …
7Frequency dependent selection — is the term given to an evolutionary process where the fitness of a phenotype is dependent on its frequency relative to other phenotypes in a given population. In positive frequency dependent selection, the fitness of a phenotype increases as it… …
8Frequency of optimum transmission — Frequency of optimum transmission, in the transmission of radio waves via ionospheric reflection, is the highest effective (i.e. working) frequency that is predicted to be usable for a specified path and time for 90% of the days of the month. It… …
9Two-Way Satellite Time and Frequency Transfer — (TWSTFT) is a high precision long distance time and frequency transfer mechanism used between time bureaux to determine and distribute time and frequency standards. As of 2003 TWSTFT is being evaluated as an alternative to be used by the Bureau… …
10Frequency-exchange signaling — is frequency change signaling in which the change from one significant condition to another is accompanied by decay in amplitude of one or more frequencies and by buildup in amplitude of one or more other frequencies.Frequency exchange signaling… …
