ELF meaning in Information Technology ?

Answer:

What is Extremely Low Frequency mean?

Extremely low frequency (ELF) is the ITU designation for electromagnetic radiation (radio waves) with frequencies from 3 to 30 Hz, and corresponding wavelengths of 100,000 to 10,000 kilometers, respectively. In atmospheric science, an alternative definition is usually given, from 3 Hz to 3 kHz. In the related magnetosphere science, the lower frequency electromagnetic oscillations (pulsations occurring below ~3 Hz) are considered to lie in the ULF range, which is thus also defined differently from the ITU radio bands.

ELF radio waves are generated by lightning and natural disturbances in Earth's magnetic field, so they are a subject of research by atmospheric scientists. Because of the difficulty of building antennas that can radiate such long waves, ELF frequencies have been used in only a very few human-made communication systems. ELF waves can penetrate seawater, which makes them useful in communication with submarines, and a few nations have built military ELF transmitters to transmit signals to their submerged submarines, consisting of huge grounded wire antennas (ground dipoles) 15–60 km (9–37 mi) long driven by transmitters producing megawatts of power. The United States, Russia, India, and China are the only countries known to have constructed these ELF communication facilities. The U.S. facilities were used between 1985 and 2004 but are now decommissioned.

reference

Full Form	Category
Expressions for Language Functions	Academic & Science
Electronic Low Flow	Academic & Science
Electronic Labor Force	Academic & Science
Electric Light and Fun	Academic & Science
Extremely Low Frequencies	Academic & Science
El Fasher	Airport Code
Excellent Location Finder	Business
E-L Financial Corporation, Limited	Business
Elf Aquitaine	Business
European Leasing and Finance	Business
Everyone Loves a Friend	Community
Electronic Literature Foundation	Community
Emerging Leaders Forum	Community
Eat Local Food	Community
Empowerment, Leadership, and Fun	Community
Early Learning Four	Community
Evans Lincoln Franklin	Community
Early Literacy Fundamentals	Community
Elimination of Leukaemia Fund	Community
Ecardiy Language File	Computing
Extensible Linking Format	Computing
Extended Language Facility	Computing
Electronic Location Finder	Computing
External Line Format	Computing
Extended Log Format	Computing
Extended Layer File	Computing
Extremely Large Fabric	Computing
Electronic Application Form File	Computing
Efrei Linux Formation	Computing
Extension Language Facility	Computing
Elf Token	Cryptocurrency
aelf	Cryptocurrency
Executable Linking Format	File Type
Enamored Of Legolas Forever	General
Electronic Life Form	General
Elevated Leg Forward	General
Everyone's Little Friend	General
Elf Liberation Front	General
Enhanced Liver Fibrosis	General
Excited Little Foresters	General
Essence Lubrificant Francaise	General
Elektronische Luftfederung	General
Extended Cycle Life Flooded	General
Encrypted Log File	General
Extreme Low Frequency	General
Executable and Linking Format	General
Emotions Location Feelings	General
Executable and Linkable File	General
Extended Lunch Fridays	General
Every little friend	General
Eat Learn Frolic	General
Eliminate Landmines Forever	General
End Landmines Forever	General
Environmental Liberation Front	Governmental
Eritrean Liberation Front	Governmental
Employee Locator Facility	Governmental
Earth Liberation Front	Governmental
Extremely Low Frequency	Information Technology
Executable and Linkable Format	Information Technology
Electronic Link Forum	Internet
Extend Legs Forward	Medical
Enzyme Linked Fluorescence	Medical
Eyes, Lips, and Face	Medical
Exeter Leukemia Fund	Medical
Engineered Life Form	Medical
Ever Lasting Friends	Messaging
Exhibition Logistics and Freight	Messaging
Exhibition Logistics & Freight	Messaging
European Liberal Forum	Regional
European Lung Foundation	Regional
Essential Lahey Fortran	Softwares
Extended Lisp Functionality	Softwares
Embedded Linker Format	Softwares
English Language Frontend	Softwares
Extremely Low Frequency (30 - 300 Hz)	Space Science