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DETERMINATION OF THE COEFFICIENT OF REFLECTION FOR MULTILAYERED SYSTEMS OF BIOLOGICAL TISSUES IN THE MICROWAVE RANGE

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A. R. Livenson · 1968

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About 50% of microwave energy reflects off your body, but individual absorption varies dramatically by up to 25%.

Plain English Summary

Summary written for general audiences

This 1968 study measured how much microwave energy reflects off the human body surface versus getting absorbed into tissues. Researchers found that about 50% of medical microwave energy (460-2375 MHz) bounces off the body, with the exact percentage varying based on individual body characteristics and frequency used.

Why This Matters

This early research reveals a fundamental reality about microwave exposure that remains relevant today. When your body encounters microwave radiation, whether from medical devices or wireless technology, roughly half the energy reflects away while the other half penetrates and gets absorbed by your tissues. The science demonstrates significant individual variation in this absorption, with some people absorbing 25% more energy than others at the same frequency. What this means for you is that EMF exposure isn't uniform across the population. Your unique body composition, tissue thickness, and other physical characteristics directly influence how much radiation you actually absorb from sources like cell phones, WiFi routers, and other wireless devices operating in similar frequency ranges.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
A. R. Livenson (1968). DETERMINATION OF THE COEFFICIENT OF REFLECTION FOR MULTILAYERED SYSTEMS OF BIOLOGICAL TISSUES IN THE MICROWAVE RANGE.
Show BibTeX
@article{determination_of_the_coefficient_of_reflection_for_multilayered_systems_of_biolo_g6404,
  author = {A. R. Livenson},
  title = {DETERMINATION OF THE COEFFICIENT OF REFLECTION FOR MULTILAYERED SYSTEMS OF BIOLOGICAL TISSUES IN THE MICROWAVE RANGE},
  year = {1968},
  
  
}

Quick Questions About This Study

This study found approximately 50% of microwave energy in the 460-2375 MHz range reflects off the body surface, while the remaining 50% gets absorbed into tissues.
Yes, individual body characteristics cause significant variation. At 460 MHz, reflection ranges from 35-63%, and at 2375 MHz from 25-76%, depending on tissue thickness and composition.
Researchers measured reflection coefficients across the medical microwave range of 460-2375 MHz, frequencies commonly used in therapeutic applications and similar to modern wireless devices.
Yes, the study found that a quarter-wave matching layer, like a 1 cm Mycalex plate, significantly increases the percentage of microwave energy absorbed by tissues.
Different frequencies penetrate tissues differently. The study showed reflection varies from 35-63% at 460 MHz to 25-76% at 2375 MHz, affecting how much energy enters the body.