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Versuche über den Einfluß kurzer elektrischer Wellen auf das Wachstum von Bakterien

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Dr. W. Haase, Priv.-Doz. Dr. E. Schliephake · 1931

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Scientists have been documenting biological effects from radio waves since 1931, nearly a century before smartphones.

Plain English Summary

Summary written for general audiences

This 1931 German study by Dr. Haase and Dr. Schliephake investigated how short-wave radio frequency radiation affects bacterial growth. The research examined biological effects of electromagnetic waves on microorganisms, representing some of the earliest scientific inquiry into EMF impacts on living systems. This work helped establish the foundation for understanding how wireless signals interact with biological processes.

Why This Matters

What makes this 1931 research remarkable is its timing - scientists were investigating biological effects of radio waves just decades after their discovery, long before anyone imagined we'd carry wireless transmitters in our pockets. Dr. Schliephake, in particular, became known for documenting what he called 'radio wave sickness' in people living near early broadcast transmitters. The fact that researchers nearly a century ago were already observing biological effects from RF radiation should give us pause about today's exponentially higher exposure levels.

The reality is that we've been accumulating evidence of EMF biological effects for almost 100 years, yet regulatory agencies continue to dismiss these findings as insufficient. While bacteria aren't humans, they share fundamental cellular processes with us. When electromagnetic fields can alter bacterial growth patterns, it demonstrates that wireless radiation isn't the inert, harmless energy that industry claims it to be.

Figures from the Original Paper

Diagrams extracted from the original research document.

diagramPage 3 - AI-described figure: A diagram illustrating components and connections in a high-frequency radio transmission setup.
diagramPage 4 - AI-described figure: A diagram illustrating a condenser setup with two plates (P) and a dielectric object between them.
diagramPage 5 - AI-described figure: A schematic diagram illustrating electrical relationships in a dielectric medium, including capacitance and resistance components.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 30 MHz to 375 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 30 MHz to 375 MHzPower 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 effects of short electromagnetic waves on bacterial growth

Experiments conducted with short electromagnetic waves in the wavelength range between 8 and 100 met...

The study found that the abatement of bacterial growth depends on the wavelength of the applied elec...

The damage to bacteria can be explained by the thermal effect alone. However, the possibility of other non-thermal influences on bacterial cellular structures cannot be ruled out. The optimal wavelength for maximum effect varies with the concentration of the electrolyte solution used.

Cite This Study
Dr. W. Haase, Priv.-Doz. Dr. E. Schliephake (1931). Versuche über den Einfluß kurzer elektrischer Wellen auf das Wachstum von Bakterien.
Show BibTeX
@article{versuche_ber_den_einflu_kurzer_elektrischer_wellen_auf_das_wachstum_von_bakterie_g97,
  author = {Dr. W. Haase and Priv.-Doz. Dr. E. Schliephake},
  title = {Versuche über den Einfluß kurzer elektrischer Wellen auf das Wachstum von Bakterien},
  year = {1931},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

Dr. W. Haase and Dr. E. Schliephake conducted this early research. Dr. Schliephake later became known for documenting 'radio wave sickness' in people living near early broadcast transmitters, making him a pioneer in EMF health research.
Bacteria were ideal test subjects because they reproduce quickly and show measurable responses to environmental changes. This allowed researchers to observe biological effects from radio frequency radiation in controlled laboratory conditions using the technology available in 1931.
The researchers investigated 'kurze Wellen' (short waves) in the radio frequency range. These were among the earliest wireless communication frequencies being used commercially, making them relevant for understanding potential biological impacts of this new technology.
This 1931 work represents some of the earliest scientific investigation into EMF biological effects. While modern studies use more sophisticated methods, the basic question remains the same: do electromagnetic fields affect living organisms at the cellular level?
This research demonstrates that scientists recognized potential biological effects from radio waves almost immediately after their widespread introduction. It challenges the narrative that EMF health concerns are recent phenomena, showing nearly 100 years of scientific inquiry.