Electromagnetic waves with frequencies between about 3 kilohertz (very low frequency - VLF) and 300,000 megahertz (extremely high frequency - EHF). They are used in television and radio broadcasting, land and satellite communications systems, radionavigation, radiolocation, and DIATHERMY. The highest frequency radio waves are MICROWAVES
Electromagnetic waves with frequencies between about 3 kilohertz (very low frequency - VLF) and 300,000 megahertz (extremely high frequency - EHF). They are used in television and radio broadcasting, land and satellite communications systems, radionavigation, radiolocation, and DIATHERMY. The highest frequency radio waves are MICROWAVES
Shorthand, French. : Phonographie : La repr?esentation?ecrite de l?oral en fran?cais
2017
1
Shorthand -- Handbooks, manuals, etc. : The Easyspeed system of shorthand : no teacher required ; by this method any person of ordinary intelligence is able to write one hundred words a minute within six months
Shorthand -- Pitman -- Study and teaching. : Modern course in Pitman's shorthand : (without exercises) : a complete handbook, using the more frequently used and important words of the English language as the material for learning the rules of Pitman's shorthand / Isaac Pitman
1999
1
Shorthand reporters. : Digest of statutes and legal decisions relating to official stenographers / compiled and published by the Committee on Legislation of the National Shorthand Reporters Association