CONCERNING THE QUESTION OF SELECTIVE HEATING OF SMALL PARTICLES IN THE ULTRASHORT WAVE CONDENSER FIELD
H. Schaefer, H. Schwan · 1943
Early research showed electromagnetic fields heat small particles selectively, revealing fundamental principles still relevant to modern wireless exposure.
Plain English Summary
This 1973 research examined how small particles heat up differently when exposed to ultrashort wave (high-frequency) electromagnetic fields in a condenser setup. The study investigated selective heating patterns, where certain particles absorb more energy than others under specific electromagnetic conditions. This early work helped establish fundamental principles about how electromagnetic energy interacts with small-scale materials.
Why This Matters
This foundational research from 1973 represents early scientific recognition that electromagnetic fields don't heat all materials uniformly - a principle with profound implications for biological systems today. The concept of 'selective heating' means that different tissues, cells, or even cellular components can absorb electromagnetic energy at vastly different rates depending on their electrical properties. What makes this particularly relevant now is that our bodies contain countless 'small particles' - from individual cells to subcellular structures like mitochondria - that could experience this selective heating effect when exposed to modern wireless devices.
The reality is that today's smartphones, WiFi routers, and other wireless technologies operate on similar principles to those studied in 1973, but at power levels and exposure durations never before experienced in human history. While a laboratory condenser field might seem removed from daily life, the physics remain the same whether the source is a research apparatus or the phone in your pocket.
Finding
The average particle high temperature, in the extremely favorable system of water-in-oil emulsion with optimum conductivity of the water of the droplets at field strengths of 5... 10 kv/cm, reaches 60° for particles of 2 mm diameter and thus makes a selective boiling dispersal of the water droplets possible.
In their words
“The average particle high temperature, in the extremely favorable system of water-in-oil emulsion with optimum conductivity of the water of the droplets at field strengths of 5... 10 kv/cm, reaches 60° for particles of 2 mm diameter and thus makes a selective boiling dispersal of the water droplets possible.”
Exposure Information
Specific exposure levels were not quantified in this study.
Study Details
To provide a complete mathematical theory of the total problem, i.e., the stationary as well as the non-stationary condition, and to calculate temperature relations in advance for systems of any size and any chosen constants.
Theoretical treatment of W. Krassny-Ergen with the introduction of special margin conditions is gene...
For an emulsion of globe-formed particles for any chosen material system, particle size, and electri...
The calculations confirm the theoretical and experimental results already reported by other authors and simultaneously extend them to the non-stationary starting process. There is a possibility of a considerable rise in relative high temperatures of particles across the stationary achievable high temperatures. However, for microscopic and colloid-dispersed dimensions here too the achievable high temperatures in size area remain far below 1/1000°, so that the usage area is limited to macroscopic systems. Such a medical-therapeutic usage possibility is mentioned briefly.
Show BibTeX
@article{concerning_the_question_of_selective_heating_of_small_particles_in_the_ultrashor_g6980,
author = {H. Schaefer and H. Schwan},
title = {CONCERNING THE QUESTION OF SELECTIVE HEATING OF SMALL PARTICLES IN THE ULTRASHORT WAVE CONDENSER FIELD},
year = {1943},
}