THE ABSORPTION OF ELECTROMAGNETIC ENERGY IN BODY TISSUES
Herman P. Schwan, Geo Morris Piersol · 1955
This 1955 research established foundational principles for understanding how electromagnetic energy heats body tissues.
Plain English Summary
This pioneering 1955 study by Herman Schwan examined how electromagnetic energy from microwave sources gets absorbed by human body tissues, focusing on the heating effects and temperature changes. The research explored how microwaves interact with different tissues and how blood flow affects heat distribution, laying crucial groundwork for understanding electromagnetic absorption in biological systems.
Why This Matters
This landmark research represents one of the earliest systematic investigations into how electromagnetic energy interacts with human tissue. Schwan's work established fundamental principles that remain relevant today as we grapple with exponentially higher EMF exposures from wireless devices. The study's focus on tissue heating and electromagnetic absorption patterns helped establish the foundation for modern specific absorption rate (SAR) measurements used in cell phone safety testing. What makes this research particularly significant is its timing - conducted in 1955, it anticipated many of the biological interaction mechanisms we're still studying today. The reality is that while this early research focused primarily on thermal effects from high-power microwave sources, we now know that biological effects can occur at much lower power levels through non-thermal mechanisms that weren't well understood at the time.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{the_absorption_of_electromagnetic_energy_in_body_tissues_g69,
author = {Herman P. Schwan and Geo Morris Piersol},
title = {THE ABSORPTION OF ELECTROMAGNETIC ENERGY IN BODY TISSUES},
year = {1955},
}