The Temperature Response of Skin Exposed to Penetrating and Non-Penetrating Radiation
Thomas P. Davis · 1959
This 1959 thermal study laid groundwork for today's heat-based EMF safety standards, which may miss non-thermal biological effects.
Plain English Summary
This 1959 research examined how human skin responds to different types of radiation - comparing penetrating radiation that goes deeper into tissue versus non-penetrating radiation that affects only the surface. The study measured temperature changes to understand how thermal energy moves through skin layers when exposed to different radiation types.
Why This Matters
This foundational thermal research from 1959 established critical principles that remain relevant to today's EMF exposure debates. Understanding how electromagnetic energy converts to heat in human tissue - and how that heat distributes through skin layers - forms the basis for current safety standards that focus primarily on thermal effects. The reality is that this thermal-focused approach, while scientifically sound for its time, may not capture the full picture of how modern EMF exposures affect our bodies. Today's wireless devices operate at power levels designed to stay below thermal thresholds, yet mounting research suggests biological effects can occur without measurable heating. This early work on thermal diffusivity and penetration depth helped shape regulatory thinking that still dominates EMF safety standards decades later.
Figures from the Original Paper
Diagrams extracted from the original research document.
Exposure Information
Specific exposure levels were not quantified in this study.
Study Details
To determine the temperature response of skin exposed to penetrating and non-penetrating radiation and to evaluate the thermal constants of skin tissue.
Experiments were performed on young, anesthetized Chester White pigs exposed to radiation from a car...
For non-penetrating radiation, the average thermal constants of pig skin were found to be: Thermal i...
For non-penetrating radiation heating, predicted and measured temperature responses of skin are in good agreement, and the thermal constants of this tissue are known. It follows that reasonably reliable temperature data are available for the study of the kinetics of thermal injury to opaque skin. For penetrating radiation heating, accurate prediction of temperature response in skin is not yet possible. Much remains to be done on problems of temperature measurements in scattering diathermanous materials and investigation of radiant energy absorption within such media.
Show BibTeX
@article{the_temperature_response_of_skin_exposed_to_penetrating_and_non_penetrating_radi_g3939,
author = {Thomas P. Davis},
title = {The Temperature Response of Skin Exposed to Penetrating and Non-Penetrating Radiation},
year = {1959},
}