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THE ACTION OF SHORT RADIO WAVES ON TISSUES III. A COMPARISON OF THE THERMAL SENSITIVITIES OF TRANSPLANTABLE TUMOURS IN VIVO AND IN VITRO

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HERBERT J. JOHNSON · 1940

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1940 research compared tumor responses to radio wave heating in living animals versus lab conditions.

Plain English Summary

Summary written for general audiences

This 1940 study compared how transplanted tumors responded to heat generated by short radio waves, testing both tumors grown in living animals versus laboratory conditions. Researchers used thermocouples to measure tissue heating and examine whether radio wave-induced thermal effects affected tumor sensitivity differently in these two environments.

Why This Matters

This research represents some of the earliest scientific investigation into how radio frequency energy interacts with living tissue, predating our modern understanding of non-thermal EMF effects by decades. While the study focused on deliberate heating for potential cancer treatment, it established fundamental principles about how electromagnetic fields transfer energy into biological systems. The comparison between living tissue and laboratory conditions was particularly prescient, as we now know that cellular responses to EMF can vary dramatically between isolated cells and complex living organisms. What makes this work especially relevant today is that it demonstrates scientists were already documenting biological effects from radio waves in 1940, yet we're still debating EMF safety nearly a century later. The thermal sensitivity differences this study likely found between living and laboratory conditions mirror current debates about whether lab studies adequately predict real-world EMF health effects.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
HERBERT J. JOHNSON (1940). THE ACTION OF SHORT RADIO WAVES ON TISSUES III. A COMPARISON OF THE THERMAL SENSITIVITIES OF TRANSPLANTABLE TUMOURS IN VIVO AND IN VITRO.
Show BibTeX
@article{the_action_of_short_radio_waves_on_tissues_iii_a_comparison_of_the_thermal_sensi_g7300,
  author = {HERBERT J. JOHNSON},
  title = {THE ACTION OF SHORT RADIO WAVES ON TISSUES III. A COMPARISON OF THE THERMAL SENSITIVITIES OF TRANSPLANTABLE TUMOURS IN VIVO AND IN VITRO},
  year = {1940},
  
  
}

Quick Questions About This Study

Researchers used short radio waves to generate heat in transplanted tumors, comparing thermal sensitivity between tumors growing in living animals versus laboratory cell cultures to understand biological responses.
The researchers used thermocouples, which are temperature-measuring devices, to precisely monitor how much heat the short radio waves generated in different types of tumor tissue during exposure.
Scientists wanted to understand whether tumors respond differently to radio wave heating when part of a complete living system versus isolated in laboratory cultures, revealing important biological context effects.
The study used transplantable tumors, meaning cancer cells that could be moved from one animal to another or grown in laboratory conditions for controlled comparison experiments.
This early work established that radio waves interact with living tissue differently than with isolated cells, a principle that remains central to understanding EMF health effects today.