| Efficient markets theory | Effects unit | EFTPOS |
| EFnetEFnet or Eris Free network (also written EFNet is a major IRC network, with over 100,000 users. Initially, most IRC servers formed a single network, to which new servers could join without restriction, but this was soon abused by people who set up servers | Effective data transfer rateIn telecommunication, effective data transfer rate is the average number of units of data, such as bits, characters, blocks, or frames, transferred per unit time from a source and accepted as valid by a sink. Note: The effective data transfer rate is usua | Effective Earth radiusIn telecommunication, effective Earth radius is the radius of a hypothetical Earth for which the distance to the radio horizon, assuming rectilinear propagation, is the same as that for the actual Earth with an assumed uniform vertical gradient of atmosph |
| Effective heightIn telecommunication, the term effective height has the following meanings: 1. The height of the center of radiation of an antenna above the effective ground level. In low- frequency applications involving loaded or nonloaded vertical antennas, the moment | Effective input noise temperatureIn telecommunications, effective input noise temperature is the source noise temperature in a two- port network or amplifier that will result in the same output noise power, when connected to a noise-free network or amplifier, as that of the actual networ | Effective mode volumeFor an optical fiber, the effective mode volume is the square of the product of the diameter of the near- field pattern and the sine of the radiation angle of the far-field pattern. The diameter of the near-field radiation pattern is defined here as the f |
| Effective powerSee Real power for detailed explanation In alternating current power transmission and distribution, effective power (also true power or real power is the actual power delivered to a system. This is to distinguish it from other definitions of power ( appar | Effective transmission rateIn telecommunication, effective transmission rate average rate of transmission effective speed of transmission is the rate at which information is processed by a transmission facility. The effective transmission rate is calculated as (a) the measured numb | Efficiency factorEfficiency factor In data communications, the ratio of (a) the time to transmit a text automatically at a specified modulation rate to (b) the time actually required to receive the same text at a specified maximum error rate. All of the communication faci |
| Effect of taxes and subsidies on price | Effigy Mounds National Monument | Efreisone |
| Efnisien | Effingham County, Illinois | Effingham County, Georgia |
| Efik mythology | Effie Gray | Effingham, Illinois |
| Effingham, Kansas | Effie, Minnesota | Effington Township, Minnesota |
| Effingham, New Hampshire | Effingham | Effective mass |
| Efficient market hypothesis | Efke | Effects of marriage |
| EFQM Excellence Model | Effusion | Efficiency (economics) |
| Efteling | Effective results in number theory | Effi Briest |
| Effie (unorganized territory), Minnesota | Efficiency | Efraín Ríos Montt |
| Effective radiated power | Effects of the automobile on societies | EFilm |
| Efrem Kurtz | EFE | EFM |
| Effort force | EF | Efren Reyes |
| Effect size | Efim Bogoljubov | Effective nuclear charge |
| Ef (Cyrillic) | Effective dose | Effleurage |
| Effective interest rate | Efficeon | EFSH |
| Effector | Effingham County | EFunda |
| Efferent nerve fiber | Effective demand | Efficiency (statistics) |
| Efate | EFF Pioneer Award | EFS |
| Efrem Zimbalist Jr. | Efficient learning method | Efficient market theory |
| EFS (IRIX) | Effect system | Effective field theory |
| Effort distance | Effect processors | Effervescent moonshine |
| EFF Albion | Effects cymbal | Effie Crockett |
| Effigy | Efrem Zimbalist | Efficiency wage hypothesis |
| EFF DES cracker | Effervescence | Efax |
| EFFector | Efficacy | Effington |
| Efraín Ríos Montt/Archive 4 | EFR | Effelder |
| Effelder (Eichsfeld) | EF Eridani | Efini |
| Efini MS-8 | EFG Eurobank-Ergasias | Effelsberg |
| Efraín Rivera Pérez | Efim Zelmanov | Efraín Morote |
| Efeito Bezold | Effective Cycling | Effective isotropically radiated power |
