EMF 

An Idiotic band formed in the 80s who actually wrote an 80s pop/ rock classic...
That most of you will recognise as "You're unbelievable"

Awesome song yes...

EMF apparently, originally stood for Ecstasy mofos =P

Remember that song? With the sexy man voice saying "Oh!"

Ya man! That was EMF mate!

EMF by _Spazzum_ August 17, 2006

EMF Detector

EMF(Epicly Major Fail) Detector: A warning device which detects Epicly Major Fails of magnitude 2 or greater. Can normally detect EMF's minutes to hours before the initial hit of the EMF. Used mainly to alert the surrounding area of an impending EMF so they may all witness it.

*SIREN*

Person 1: "Ohh dude that's the EMF Detector!".

Person 2: "Well lets go see who screwed the pooch this time, then we can laugh and ridicule them all day!"

Person 1: "Yeah lets go!"

EMF Detector by TehTub January 4, 2010

Back EMF

The counter-electromotive force (abbreviated counter emf, or CEMF ) 1 is the voltage, or electromotive force, that pushes against the current which induces it, is caused by a changing electromagnetic field. It's represented by Lenz's Law of electromagnetism. Back electromotive force is a voltage that occurs in electric motors where there is relative motion between the armature of the motor and the external magnetic field. Counter emf is a voltage developed in an inductor network by a pulsating current or an alternating current. 2 The voltage's polarity is at every moment the reverse of the input voltage 3 4

In a generator using a rotating armature and, in the presence of a magnetic flux, the conductors cut the magnetic field lines as they rotate. The changing field strength produces a voltage in the coil; the motor is acting like a generator.. (Faraday's law of induction.) This voltage opposes the original applied voltage; therefore, it is called "counter-electromotive force". (by Lenz's law.) With a lower overall voltage across the armature, the current flowing into the motor coils is reduced. 5

Pretty self explanatory dont you think, i added this as the previous entry was rubbish and he's obviously visited an engineer who doesn't know what back EMF is.

Back EMF by Nicker doodle doo May 29, 2007

Back EMF

A phrase a technician uses when he hasn't a clue what's wrong and he doesn't want to be seen not to know what's wrong, so he talks shit!

I think the reasion that it is switching is
a back EMF from when you power up the panel?

Back EMF by Gav September 9, 2003

EMFB 

internet acronym slang; stands for Eat My Fuckin' Butt

all you n00bZ in this thread can EMFB or GTFO

EMFB by Sweet Daddy Patty January 26, 2010

Emfishing 

Catfishing as Emily Ohara
In other words, “emfishing”
It is a common slang term used by her close friends.

M: I just go emfished

J: word
M: I just became one of the millions who gets emfished everyday.
J: Emfishing is not a joke, Jim

Emfishing by BobJohnson and Maya January 17, 2023

EMFDYSI

Acronym for "English, motherfucker, do you speak it?!", a line from Pulp Fiction. Used on the Internet in response to nonsensical writing.

Person A: "U C4N7 B337 MY 1337 5Kii15!!!!!!!!!! YA N00BS!!!!!"
Person B: "EMFDYSI?!"

EMFDYSI by Dasrik November 22, 2007