radio field

См. также в других словарях:

• radio field intensity — noun or radio field strength : the electromagnetic field intensity consisting of an electric and a magnetic field intensity produced by a radio wave and commonly expressed in millivolts per meter or microvolts per meter …   Useful english dictionary

• radio field strength — noun see radio field intensity …   Useful english dictionary

• Field Day — is an annual amateur radio exercise, widely sponsored by IARU regions and member organizations, encouraging emergency communications preparedness among amateur radio operators. In the United States, it is typically the largest single emergency… …   Wikipedia

• field guidance — /ˈfild gaɪdns/ (say feeld guydns) noun guidance of an aeronautical missile to a point within a natural (e.g. gravitational) or artificial (e.g. radio) field by means of the properties of that field …  

• Radio galaxy — Radio galaxies and their relatives, radio loud quasars and blazars, are types of active galaxy that are very luminous at radio wavelengths (up to 1038 W between 10 MHz and 100 GHz). The radio emission is due to the synchrotron process. The… …   Wikipedia

• Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …   Wikipedia

• Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …   Wikipedia

• Radio astronomy — is a subfield of astronomy that studies celestial objects at radio frequencies. The field originated from the discovery that many astronomical objects emit radiation in the radio wavelengths as well as optical ones. The great advances in radio… …   Wikipedia

• Radio New Zealand National — Broadcast area New Zealand Frequency …   Wikipedia

• Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …   Wikipedia

• Field recording — is the technique for capturing the audible illustration of an environment, produced outside of a recording studio. A field recording is the actual recording that is produced.Field recording, sometimes called Phonography, was originally employed… …   Wikipedia