You're wrong
You're wrong
Stevero, I beg to differ with you. EMF can , of course, mean a few different things. It usually means elctromotive force or electromagnetic field. Not Electric and Magnetic Field as you say. A gaussmeter will read emf's just fine.
You're right for communications frequencies, but you're wrong for power frequencies - the electric and magnetic fields are distinctly different.
From IEEE Standard 539 - IEEE Standard Definitions of Terms related to Corona and Field Effects of Overhead Power Lines:
6.1 electromagnetic field: A time-varying field, associated with the electric or magnetic forces and described by Maxwell?s equations. NOTE?The term electromagnetic field is sometimes used to refer to power-frequency electric and magnetic fields, fields that for most practical applications can be considered independent and for which the effects of one component may dominate or be of primary interest. For such situations, the use of the term electric field or magnetic field, as the case may apply, is encouraged.
6.3 electric field strength (E): At a given point in space, the ratio of force on a positive test charge placed at the point to the magnitude of the test charge, in the limit that the magnitude of the test charge goes to zero. The electric field strength at a point in space in an electric field is a vector defined by its space components along three orthogonal axes.
NOTE 1?In a zero magnetic field, the force F is given by F = qE. The magnitudes of the electric field strength components are expressed in volts per meter (V/m), which dimensionally is the same as Newton/Coulomb.
NOTE 2?This term has sometimes been called the electric field intensity, but such use of the word intensity is deprecated in favor of strength, since intensity connotes power in optics and radiation.
NOTE 3?Though they are used often, the use of electric field or E-field is deprecated in favor of electric field strength.
6.5 magnetic field: A vector field of magnetic field strength, H, or of magnetic flux density, B.
NOTE 1?The term is also used to denote a region in which such vector fields have a significant magnitude.
NOTE 2?Vector field. The totality of vectors in a given region represented by a vector function ν(x, y, z) of the space coordinates x, y, z. A vector field (in this case, the magnetic field) associates a vector valued quantity (in this case, the magnetic field strength, H, or magnetic flux density, B) with every point in a given region.
6.7 magnetic flux density: The vector quantity, often denoted as B, of zero divergence at all points, which determines the component of the Coulomb-Lorentz force that is proportional to the velocity of a moving charge.
NOTE 1?. . .The vector properties of the magnetic flux density produced by currents in power-line conductors are the same as those given for the electric field strength in 6.3.1 ac electric field strength. The unit for the magnitude of the magnetic flux density components is the tesla (T).
NOTE 2?Some documents may refer to the magnitude of the magnetic flux density using gauss for the units. The unit gauss is related to the unit tesla by the equation 1 T = 10^4 gauss.
NOTE 3?For time-varying (ac) fields, values are expressed as their rms values unless stated otherwise.
NOTE 4?Though they are used often, the use of magnetic field or B-field is deprecated in favor of magnetic flux density.
6.9 ac power-line fields: Power-frequency electric and magnetic fields produced by ac power lines.
7.1.1 ac electric field strength meter: A meter designed to measure the power-frequency electric field strength. Two types of electric field strength meters are in common use....
7.7 magnetic flux density meter: A meter designed to measure the magnetic flux density. These meters may use any of several types of flux density sensors or probes....
11.1 electromagnetic signal: The intelligence, message, or effect to be conveyed over a communicationsystem or broadcasting system via electromagnetic waves.
You can further look at IEEE 644 - IEEE Standard Procedures for Measurement of Power Frequency Electric and Magnetic Fields From AC Power Lines to see that indeed measurement of electric and magnetic fields are done with separate instruments.
The standard for the different instruments for measuring electric and magnetic fields is IEEE 1308 - IEEE Recommended Practice forInstrumentation: Specifications for Magnetic Flux Density and Electric Field Strength Meters - 10 Hz to 3 kHz
Even though these standards are for transmission lines, ac fields are ac fields. The physics are the same.
Enough said?