8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body
Whole Body / General

New Experimental Methods Applicable to Ultra-Short Waves

Bioeffects Seen

G. C. Southworth · 1936

Share:

1936 Bell Labs research established wave guide technology that enabled higher frequency measurements, laying groundwork for modern wireless systems.

Plain English Summary

Summary written for general audiences

This 1936 Bell Telephone Laboratories technical paper describes early experimental methods for measuring radio frequencies above 1 billion cycles per second using hollow metal pipes called wave guides. Researchers developed new transmission techniques to push beyond the frequency measurement limits of that era. The work laid groundwork for high-frequency electromagnetic wave research and applications.

Why This Matters

While this 1936 paper predates modern EMF health research by decades, it represents a pivotal moment in electromagnetic technology development. Southworth's wave guide experiments at Bell Labs helped establish the technical foundation for many wireless technologies we use today, from radar systems to cellular networks. The research focused on frequencies around 1 billion cycles per second (1 GHz), which falls within ranges now used by modern wireless devices. What's particularly relevant is how this early work demonstrates the telecommunications industry's long history of pushing frequency boundaries for technical advancement, often without concurrent biological safety research. The paper's focus on extending measurement capabilities "materially beyond" existing limits reflects an industry pattern of technological development that continues today with 5G and beyond, where engineering possibilities often outpace health effect studies.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
G. C. Southworth (1936). New Experimental Methods Applicable to Ultra-Short Waves.
Show BibTeX
@article{new_experimental_methods_applicable_to_ultra_short_waves_g6836,
  author = {G. C. Southworth},
  title = {New Experimental Methods Applicable to Ultra-Short Waves},
  year = {1936},
  
  
}

Quick Questions About This Study

The researchers aimed to measure frequencies beyond 1 billion cycles per second (1 GHz), which was considered the frontier limit of electrical measurements at that time.
Wave guides use hollow metal cylinders to propagate specific patterns of electric and magnetic forces as waves, requiring the pipe diameter to be at least 0.58 wavelengths.
It established fundamental techniques for high-frequency electromagnetic wave transmission and measurement that became essential for radar, microwave communications, and modern wireless systems development.
Wave guides offered a novel approach to high-frequency electrical measurements, allowing researchers to work with electromagnetic waves at frequencies previously difficult to measure accurately.
No, this was purely technical research focused on electromagnetic wave transmission methods. Biological effects of radio frequencies weren't systematically studied until decades later.