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Environmental Effects of Atmospheric Electric Processes of Very Low Frequency

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Herbert L. König · 1965

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This 1965 research established early scientific foundation for studying how very low frequency electromagnetic fields affect environmental and biological systems.

Plain English Summary

Summary written for general audiences

This 1965 technical report by König examined the environmental effects of very low frequency (VLF) atmospheric electrical processes. The research focused on understanding how natural and artificial VLF electromagnetic fields in the atmosphere might impact the environment. This work represents early scientific investigation into VLF electromagnetic phenomena and their potential biological effects.

Why This Matters

This 1965 research by König represents pioneering work in understanding very low frequency electromagnetic effects on biological systems. VLF frequencies (3-30 kHz) are particularly relevant today because they're used in military communications, navigation systems, and occur naturally in atmospheric phenomena like lightning. What makes this early research significant is that it predates much of our modern EMF exposure from wireless technology, yet already recognized the need to study environmental impacts of electromagnetic fields.

The reality is that VLF exposure has only increased since 1965. Modern sources include power line harmonics, switching power supplies in electronics, and intentional VLF transmitters. While VLF frequencies are lower than cell phone radiation, they can penetrate deeply into biological tissue and travel great distances through the Earth's atmosphere. This foundational research helped establish the scientific framework for understanding how electromagnetic fields interact with living systems.

Figures from the Original Paper

Diagrams extracted from the original research document.

diagramPage 6 - Figure 1: Frequency-determining preamplifier stage consisting of a tube stage with feedback through high-pass and low-pass filters connected in series.
diagramPage 7 - AI-described figure: Figure 3. Recording of various electromagnetic signals (Types I to V), as described in the text.
graphPage 8 - Figure 4: Diurnal variation in the intensity of Type I signals.
graphPage 9 - Figure 5 displays the average diurnal variation of intensity of electromagnetic signals in the frequency band between 45 Hz and 252 Hz.
chartPage 10 - Figure 6: Average diurnal variation of the amplitude of electromagnetic signals between 25 Hz and 130 Hz (after Holzer and Deal).

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1-25 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1-25 HzPower lines50/60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Specific exposure levels were not quantified in this study. Duration: 2 hours/day for 30 days

Study Details

To investigate the existence of electromagnetic signals in the atmosphere in the frequency range between 1 Hz and 12 Hz and determine their influence on the environment, particularly on human reaction time, skin resistance, and biological systems.

Measurements were conducted using conventional wire antennas, ground antennas, and specially designe...

Type I signals (9 Hz, sinusoidal) were detected during fair weather with pronounced afternoon maximu...

Atmospheric electric processes in the VLF range (1-25 Hz) have measurable effects on the environment. These signals influence human reaction time and skin resistance, affect molting processes in aphids, and impact bacterial growth, yeast development, and wheat seedling length. The results suggest that these natural electromagnetic processes may be considered as biotropic factors affecting human health and biological systems.

Cite This Study
Herbert L. König (1965). Environmental Effects of Atmospheric Electric Processes of Very Low Frequency.
Show BibTeX
@article{environmental_effects_of_atmospheric_electric_processes_of_very_low_frequency_g4020,
  author = {Herbert L. König},
  title = {Environmental Effects of Atmospheric Electric Processes of Very Low Frequency},
  year = {1965},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

Very low frequency (VLF) atmospheric electrical processes include natural phenomena like lightning and artificial sources like military communications operating between 3-30 kHz. These electromagnetic fields can travel long distances through the atmosphere and penetrate the ground.
By 1965, scientists recognized that both natural VLF sources (lightning, atmospheric resonances) and growing artificial VLF transmitters for navigation and communication might affect biological systems. This research aimed to understand these environmental impacts before widespread deployment.
VLF frequencies (3-30 kHz) are much lower than cell phone radiation (around 1-6 GHz) but higher than power line frequencies (50-60 Hz). VLF can penetrate deeply into tissue and travel globally, making exposure widespread.
In 1965, VLF sources included natural atmospheric electricity from lightning, early military communication systems, and navigation beacons. Today's sources also include power electronics, switching supplies, and more extensive military VLF networks.
VLF frequencies can penetrate deeply into biological tissue due to their long wavelengths and low attenuation. They may interact with cellular electrical processes differently than higher frequency radiation, potentially affecting nervous system function.