Ferrari RP · 1940
This 1940 study by Ferrari examined occupational injuries in workplace settings, focusing on exposure risks, safety practices, and engineering controls. While specific findings aren't available, the research addressed worker health effects and toxicity concerns in industrial environments. This represents early recognition that workplace exposures require systematic study and protective measures.
Knaus, H. · 1940
This 1940 research by Knaus examined how temperature affects sperm sensitivity to radiation exposure, focusing on the testicles' thermal response. The study explored the relationship between heat and radiation effects on male reproductive cells. This early work laid groundwork for understanding how environmental factors like electromagnetic fields might interact with thermal stress to affect fertility.
Hasche, E. · 1940
This 1940 research by E. Hasche examined how short wave radiofrequency radiation affects biological tissue. While specific findings aren't available, this represents early scientific investigation into RF energy's biological effects. The study contributes to our foundational understanding of how electromagnetic fields interact with living systems.
HERBERT J. JOHNSON · 1940
This 1940 study compared how transplanted tumors responded to heat generated by short radio waves, testing both tumors grown in living animals versus laboratory conditions. Researchers used thermocouples to measure tissue heating and examine whether radio wave-induced thermal effects affected tumor sensitivity differently in these two environments.
Makoto Koiwa · 1939
This 1939 Japanese study examined how short wave radio frequency radiation affected kidney function in animals, specifically measuring glomerular filtration (how kidneys filter blood) and tubular reabsorption (how kidneys reclaim useful substances). The research compared normal kidneys with denervated kidneys (surgically disconnected from nerve control) to understand how RF exposure impacts this vital organ system.
FRANK HAMMOND KRUSEN, M.D. · 1939
This 1939 preliminary report by Dr. F.H. Krusen examined short wave diathermy, a medical therapy using radiofrequency electromagnetic fields to generate deep tissue heating. The study represents early medical research into controlled EMF exposure for therapeutic purposes, documenting effects of RF radiation on human patients during clinical treatment.
Liebesny P · 1938
This 1938 research examined athermic short wave therapy, an early form of radiofrequency medical treatment that used electromagnetic fields without generating significant heat in body tissues. The study explored therapeutic applications of RF energy, including effects on biological emulsions and cellular structures described as 'pearl chains.' This represents some of the earliest documented medical use of radiofrequency electromagnetic fields.
Frenkel, G. L. · 1937
This 1937 research examined the biological effects of VHF-HF (very high frequency to high frequency) electromagnetic fields, representing some of the earliest scientific investigation into how radio frequency radiation affects living systems. The study documented various characteristics of how biological organisms respond to these electromagnetic exposures. This pioneering work laid groundwork for understanding RF bioeffects decades before widespread wireless technology adoption.
FRANK DICKENS, STANLEY F. EVANS, HANS WEIL-MALHERBE · 1937
This 1937 study examined whether short radio waves could treat tumors in live animals. Researchers found that radio waves only affected tumors when they generated enough heat to raise tissue temperature, with no special anti-cancer properties beyond thermal effects. The study concluded that radio wave therapy offered no advantages over established treatments like surgery or X-rays.
F. W. HARTMAN · 1937
This 1937 study examined brain damage and organ injury in humans and animals exposed to controlled fever therapy (artificial heating). Researchers found severe tissue damage including brain hemorrhages, lung congestion, liver degeneration, and cellular death across multiple organs. The study documented how heat exposure causes widespread biological harm.
Wilhelm Krasny-Ergen · 1936
This 1936 German technical paper by Wilhelm Krasny-Ergen studied electromagnetic field distribution patterns, specifically examining short waves and rotating fields around cylindrical objects. The research focused on mathematical modeling of how radio frequency fields behave in different configurations. This represents early foundational work in understanding electromagnetic field propagation.
Coulter JS, Carter HA · 1936
This 1936 study examined how short wave diathermy (therapeutic electromagnetic heating) raises temperatures in human tissues. Researchers Coulter and Carter investigated the heating effects of radio frequency electromagnetic fields on the human body. This early research helped establish understanding of how EMF energy converts to heat in biological tissue.
Wilhelm Krasny-Ergen · 1936
This 1936 study by W. Krasny-Ergen examined how alternating electrical fields affect colloids (tiny particles suspended in liquid) through non-thermal mechanisms. The research focused on biological effects that occur without heating, specifically studying how electrical vibrations and induction powers influence microorganisms. This represents early scientific recognition that electromagnetic fields can produce biological effects beyond simple heating.
Richard Kovacs, M.D. · 1936
This 1936 technical paper by R. Kovacs describes the development of a vacuum tube device that could generate both faradic (alternating) and galvanic (direct) electrical currents for medical electrotherapy treatments. The research focused on the engineering aspects of creating controlled electromagnetic wave patterns using vacuum tube technology, which was cutting-edge for its time.
G. C. Southworth · 1936
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.
BYNUM, James Arthur · 1936
Researchers exposed 24 male university students to 1000 MHz microwave radiation at 10 mW/cm² while they performed memory tasks involving nonsense syllables. The study found no significant differences in learning or recall ability between students exposed to the radiation and those who weren't. This suggests that short-term exposure to this specific frequency and power level doesn't impair verbal memory function.
Wilhelm Krasny-Ergen · 1936
This 1936 German technical paper by Wilhelm Krasny-Ergen examined electromagnetic field distribution patterns, focusing on short waves and rotating fields around cylindrical structures. The research represents early foundational work in understanding how electromagnetic fields behave in different configurations. While predating modern health research, this type of field analysis became crucial for later studies examining EMF exposure patterns.
JOHN S. COULTER, M.D., HOWARD A. CARTER, B.S. in M.E. · 1936
This 1936 study by Coulter examined how short wave diathermy (a medical heating treatment using radio frequency electromagnetic fields) raises temperatures in human tissues. The research explored the biological heating effects of RF energy, documenting how electromagnetic fields can directly warm body tissues through energy absorption.
Prof. W. E. Curtis, F.R.S., Dr. F. Dickens, and S. F. Evans · 1936
This 1936 research by Curtis examined the specific biological effects of ultra-short wireless waves, representing one of the earliest scientific investigations into radiofrequency radiation's impact on living systems. The study explored how these short-wave radio transmissions might produce distinct biological responses, laying groundwork for decades of EMF health research that followed.
Paul J. Reiter · 1936
This 1936 German study tested shortwave radio frequencies (3.3-15 meter wavelengths) on rabbit brains and human patients with mental illness. Researchers found the effects appeared to be purely thermal (heat-based) rather than from specific electromagnetic properties, and reported promising therapeutic results for conditions like schizophrenia and dementia.
Not clearly visible · 1935
This 1935 medical study examined the use of high-frequency electrical currents in urological surgery, particularly for prostate procedures like transurethral resection. The research focused on electrosurgical techniques that use radiofrequency energy to cut and cauterize tissue during surgical procedures. This represents early documentation of medical RF exposure in surgical settings.
David H. Kling, M.D. · 1935
This 1934 study by Dr. Kling examined the therapeutic results of shortwave and ultrashort wave therapy, also known as radiathermy or diathermy. The research focused on evaluating the medical applications of radiofrequency electromagnetic fields for physical therapy treatments. This represents early documentation of deliberate human exposure to RF energy for therapeutic purposes.
L. H. Stiebock · 1935
This 1935 study examined the fundamentals of short wave therapy, a medical treatment using radiofrequency electromagnetic fields for heating tissue (diathermy), tissue destruction (fulguration), and blood vessel sealing (coagulation). The research explored how controlled RF energy could be applied therapeutically in medical procedures.
A. BACHEM · 1935
This 1935 German research by Bachem investigated how ultrashort radio waves could selectively produce heat in biological tissues, marking early recognition that electromagnetic radiation could cause specific thermal effects in living systems. The study explored the potential for targeted heating applications in medical diathermy treatments. This represents some of the earliest documented scientific interest in how radio frequency energy interacts with biological materials.
C. J. BREITWIESER · 1935
This 1935 study by Breitwieser analyzed the selective effects of short wave therapy, examining how electromagnetic fields used in medical diathermy treatments produce heat in body tissues. The research focused on understanding the different impacts of electric versus magnetic field components in therapeutic electromagnetic applications.