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INSTRUMENT FÖR NÄRFÄLTSMÄTNINGAR AV RADIOFREKVENTA ELEKTRISKA OCH MAGNETISKA FÄLT

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Kjell Hansson Mild, Ronnie Lundström, Bertil Nordström · 1978

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Proper EMF measurement requires assessing both electric and magnetic components, not just one field type.

Plain English Summary

Summary written for general audiences

This 1978 Swedish technical report describes the development of specialized instruments to measure both electric and magnetic field components of radiofrequency radiation in workplace environments. The researchers created an E-field meter for frequencies between 10-100 MHz and power densities up to 1000 W/m², plus an H-field meter for 10-60 MHz frequencies capable of measuring up to 3 A/m at 27 MHz.

Why This Matters

This early technical work represents a crucial foundation for occupational EMF safety - the recognition that proper workplace assessment requires measuring both electric AND magnetic field components, not just one or the other. What makes this particularly relevant today is that many consumer EMF meters still only measure one component, giving you an incomplete picture of your actual exposure. The power density levels this instrument was designed to measure (up to 1000 W/m²) are extraordinarily high compared to typical consumer exposures - your cell phone produces roughly 1-2 W/m² at your head during a call. This underscores how industrial and occupational RF exposures can dwarf the levels we encounter from personal devices, yet workplace EMF safety often receives less public attention than consumer electronics.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Kjell Hansson Mild, Ronnie Lundström, Bertil Nordström (1978). INSTRUMENT FÖR NÄRFÄLTSMÄTNINGAR AV RADIOFREKVENTA ELEKTRISKA OCH MAGNETISKA FÄLT.
Show BibTeX
@article{instrument_f_r_n_rf_ltsm_tningar_av_radiofrekventa_elektriska_och_magnetiska_f_l_g5145,
  author = {Kjell Hansson Mild and Ronnie Lundström and Bertil Nordström},
  title = {INSTRUMENT FÖR NÄRFÄLTSMÄTNINGAR AV RADIOFREKVENTA ELEKTRISKA OCH MAGNETISKA FÄLT},
  year = {1978},
  
  
}

Quick Questions About This Study

The electric field strength meter was designed to measure frequencies between 10-100 MHz, covering important industrial and communication frequency bands used in workplace environments during that era.
The E-field meter could measure power densities up to 1000 W/m², which is extremely high compared to consumer device exposures and indicates serious occupational EMF hazards.
The magnetic field strength meter could measure up to 3 A/m (amperes per meter) at 27 MHz, providing capability to assess the magnetic component of RF fields.
Proper occupational health assessment of radiofrequency electromagnetic fields requires measuring both electric (E) and magnetic (H) components since they behave differently and create different biological interactions.
The magnetic field strength meter was designed for the 10-60 MHz frequency range, covering important industrial RF frequencies that workers might encounter in various applications.