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MEASUREMENTS OF ELECTROMAGNETIC ACTIVITIES OF THE HUMAN BODY IN THE FREQUENCY REGION 1 kHz - 2 GHz

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Human bodies naturally emit electromagnetic radiation across wireless technology frequencies, making baseline measurements crucial for EMF health research.

Plain English Summary

Summary written for general audiences

This technical report measured electromagnetic activity naturally produced by the human body across frequencies from 1 kHz to 2 GHz, using advanced equipment including microwave radiometers and medical monitoring devices. The research documented the body's own electromagnetic emissions, including thermal radiation and bioelectrical signals from organs like the heart and brain. This work helps establish baseline measurements for understanding how external EMF sources interact with the body's natural electromagnetic environment.

Why This Matters

This research represents crucial foundational work in understanding the human body's natural electromagnetic signature across a remarkably broad frequency spectrum. What makes this particularly relevant to today's EMF health debate is that it documents our body's baseline electromagnetic activity in the same frequency ranges used by modern wireless technologies. The reality is that your body naturally generates electromagnetic fields through normal biological processes - from the electrical activity of your heart and brain to thermal radiation from your skin. Understanding these natural emissions is essential for determining how external EMF sources like cell phones, WiFi, and other wireless devices interact with our biological systems. When we know what electromagnetic activity is normal for the human body, we can better assess the potential impacts of adding artificial EMF exposures on top of this natural background.

Figures from the Original Paper

Diagram extracted from the original research document.

graphPage 5 - AI-described figure: Figure 1: A graph showing temperature (in Kelvin) as a function of frequency (in Hertz), with a sharp decline at lower frequencies and a plateau at higher frequencies.
p. 5 of the original PDF

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1 kHz - 2 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1 kHz - 2 GHzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study.

Study Details

To investigate the emission of electromagnetic waves in the frequency region 103 - 2-109 Hz where very few reliable investigations seem to have been made.

We designed a number of tunable radiometers. The general principle was a comparison of the noise pow...

The human body acts as a purely thermal radiator down to about 104 Hz. Below 104 Hz the high frequen...

The human body seems to be a purely thermal radiator at frequencies above 104 Hz. Below frequencies of the order 104 Hz the electromagnetic emission of the body raises above the thermal level. This is caused by the same electromagnetic phenomena that are observed in EEG, EMG and ECG.

Cite This Study
Unknown (n.d.). MEASUREMENTS OF ELECTROMAGNETIC ACTIVITIES OF THE HUMAN BODY IN THE FREQUENCY REGION 1 kHz - 2 GHz.
Show BibTeX
@article{measurements_of_electromagnetic_activities_of_the_human_body_in_the_frequency_re_g5451,
  author = {Unknown},
  title = {MEASUREMENTS OF ELECTROMAGNETIC ACTIVITIES OF THE HUMAN BODY IN THE FREQUENCY REGION 1 kHz - 2 GHz},
  year = {n.d.},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

The human body naturally produces electromagnetic activity across a wide spectrum from 1 kHz to 2 GHz, including thermal radiation from skin, electrical signals from the heart (ECG), brain waves (EEG), and muscle activity (EMG).
Microwave radiometers detect thermal radiation naturally emitted by the human body in microwave frequencies. These sensitive instruments can measure the electromagnetic signature of internal body temperature and biological processes without any external radiation exposure.
This frequency range covers both biological electrical activity (like brain waves and heart rhythms at lower frequencies) and thermal emissions at higher frequencies, spanning the same spectrum used by modern wireless technologies.
Yes, EEG (brain electrical activity) and ECG (heart electrical signals) are major sources of the body's natural electromagnetic emissions, particularly in the lower frequency ranges measured in this research.
While both operate in similar frequency ranges, wireless devices typically emit much stronger electromagnetic fields than the body's natural emissions. This research helps establish baseline measurements for comparison with external EMF sources.