William Bierman, M.D. · 1948
This 1948 medical review examined the therapeutic use of artificially induced fever (hyperthermia) to treat infections like gonorrhea and syphilis before antibiotics became widely available. The study assessed fever therapy's effectiveness compared to emerging treatments like penicillin and sulfonamides. This represents early medical research into controlled heat exposure for therapeutic purposes.
Donald L. Rose, Sedgwick Mead · 1948
This 1948 study examined how electrical currents used in medical therapy affect human sensation and pain levels. Researchers measured the tactile sensations and pain responses when electric current passed through the body, aiming to find ways to maximize therapeutic muscle contractions while minimizing patient discomfort.
Hermann Schwan · 1948
This 1948 study by Hermann Schwan examined how temperature affects blood's dielectric properties when exposed to extremely low frequency electromagnetic fields (10-1000 meter wavelengths). The research found that blood's dielectric constant remains stable across different temperatures, indicating that electromagnetic field interactions with blood depend on its cellular structure rather than thermal effects.
JASPER, HH · 1948
This 1948 foundational research by H.H. Jasper examined how electrical activity flows between the thalamus and cortex regions of the brain, establishing early understanding of neural electrical patterns. The work helped create the scientific framework for measuring brain electrical activity that we still use today. This research became crucial for understanding how external electromagnetic fields might interfere with the brain's natural electrical systems.
W. W. Salisbury, John W. Clark, H. M. Hines · 1948
This 1948 technical report by W.W. Salisbury examined physiological damage caused by microwave radiation exposure in animals. The research represents one of the earliest systematic investigations into the biological effects of microwave energy, conducted during the post-World War II period when radar technology raised initial safety concerns. This foundational work helped establish the scientific understanding that microwave radiation can cause measurable biological harm.
Arthur C. Giese · 1947
This 1947 review examined how radiation across the electromagnetic spectrum affects cell division, covering both ionizing and non-ionizing radiation sources. The research analyzed biological effects of electromagnetic radiation on cellular reproduction processes. This early work helped establish foundational understanding of how electromagnetic fields interact with living cells during critical division phases.
H. Schaefer, H. Schwan · 1947
This 1947 research investigated whether ultrashort radio frequency waves could selectively heat individual cells in biological tissue, focusing on bacteria and microorganisms. The study explored how electromagnetic fields might target single cells rather than heating tissue uniformly, examining the role of different dielectric properties between cell types.
Ward G E · 1947
This 1947 study examined electrosurgery techniques that use high-frequency electrical currents to cut and destroy tissue during surgical procedures. The research focused on methods like electrocoagulation and electrodesiccation, which apply radiofrequency energy directly to human tissue. This represents one of the earliest documented medical applications of RF energy in direct contact with the human body.
Lion KS · 1947
This 1947 research investigated how metals present in biological tissues affect heating patterns during diathermy treatment, which uses radiofrequency electromagnetic fields for therapeutic heating. The study examined whether metal implants or naturally occurring metals in tissues could concentrate electromagnetic fields and create dangerous hot spots. This early work helped establish safety protocols for electromagnetic medical treatments.
H. Schaefer, H. Schwan · 1947
This 1947 research investigated how ultrashort radiofrequency waves could selectively heat individual cells within biological tissues. The study examined the potential for targeted heating effects at the cellular level using RF energy. This early work explored fundamental questions about how electromagnetic fields interact with living tissue.
MM. LES SECRÉTAIRES PERPÉTUELS · 1947
This 1947 French Academy of Sciences publication represents proceedings from academic sessions covering various scientific topics including biological chemistry. While specific EMF-related findings aren't detailed, this historical document reflects the early institutional scientific discussions that would later inform electromagnetic field research.
de Seguin L., Castelain G. · 1947
This 1947 study by De Seguin examined how ultra high frequency electromagnetic waves affected body temperature in small laboratory animals like rats and mice. The research represents early scientific investigation into whether radiofrequency radiation could cause measurable biological changes in living organisms. This work helped establish the foundation for understanding thermal effects of EMF exposure that remain relevant today.
CIGNOLINI, P · 1947
This 1947 medical research examined how to measure and calculate proper doses of shortwave radio frequency energy used in therapeutic treatments. The study focused on dosimetry methods for shortwave diathermy, a common medical practice that uses RF energy to heat deep tissues for pain relief and healing.
K. S. Lion · 1947
This article examines how the presence of metallic materials in body tissues affects the safety and efficacy of diathermy treatment using radiofrequency and short-wave energy. The research addresses thermal effects and potential complications arising from metal-tissue interactions during therapeutic diathermy applications.
URSULA M. LEDEN et al. · 1947
This 1947 study investigated how microwave radiation from radar systems affects human heating and blood circulation patterns. The research examined the biological effects of early radar technology, particularly focusing on how microwaves generate heat in human tissue and alter circulatory function. This represents some of the earliest scientific documentation of microwave biological effects in humans.
JAMES D. HARDY, HAROLD G. WOLFF, HELEN GOODELL · 1947
This 1947 research by Hardy developed methods for measuring human pain sensitivity and discrimination, establishing foundational principles for quantifying subjective pain experiences. The study focused on how people distinguish between different intensities of painful stimuli and created measurement scales for pain research. This work laid important groundwork for understanding how humans perceive and respond to potentially harmful stimuli.
H. S. ETTER, R. H. PUDENZ, I. GERSH · 1947
This 1947 study examined how diathermy (medical heating using radio frequency radiation) affects tissues surrounding surgically implanted metals in animals. The research investigated whether RF radiation used in medical treatments could cause dangerous heating or tissue damage around metal implants. This early work established important safety considerations for medical RF procedures that remain relevant today.
F. C. HENRIQUES Jr., Ph.D. · 1947
This 1947 research by Henriques established fundamental mathematical principles for predicting how heat exposure causes permanent skin damage. The study developed rate process equations to determine when thermal injury becomes irreversible in human skin tissue. This foundational work created the scientific framework still used today to assess thermal damage from any heat source.
de Saguin, L., Costechain, C. · 1947
This 1947 French study examined how ultra high frequency electromagnetic waves at 21 centimeter wavelengths affected body temperature in small laboratory animals. The research represents one of the earliest investigations into microwave radiation's biological effects, decades before microwave ovens and wireless devices became common. This pioneering work helped establish the foundation for understanding how electromagnetic fields interact with living tissue.
Grant E. Ward, M.D. · 1947
This 1947 medical study examined electrosurgery techniques, which use high-frequency electrical currents to cut tissue and control bleeding during surgical procedures. The research focused on methods like electrocoagulation and electrodesiccation, representing early documentation of how radiofrequency energy interacts with human tissue in medical settings.
R. COOPER · 1946
This 1946 study measured the electrical properties of salt water solutions at radio frequencies from 1-4000 MHz to understand how saltwater conducts electromagnetic energy. The research provided foundational data for predicting how seawater behaves at high frequencies, which became crucial for understanding EMF propagation through biological systems since the human body is roughly 60% saltwater.
T. M. Caffaratto · 1946
This 1946 Italian study examined changes in white blood cell counts (leukocytes) in women following shortwave therapy treatments in gynecological practice. The research documented blood cell variations after exposure to radiofrequency electromagnetic fields used in medical diathermy procedures. This represents early clinical observation of biological responses to therapeutic RF radiation.
T. M. Caffaratto · 1946
This 1946 study investigated changes in white blood cells (leukocytes) following shortwave diathermy treatment in gynecological patients. The research examined how radiofrequency energy used in medical therapy affected immune cell counts. This represents early documentation of biological effects from therapeutic RF exposure.
Richard H. Follis, Jr. · 1946
This 1946 military study investigated whether radar equipment used during World War II caused biological harm to personnel, following widespread rumors of sterilization and hair loss. The research found no evidence that radar waves produced dangerous biological effects. This represents one of the earliest systematic investigations into high-frequency electromagnetic radiation health effects.
Johan E. Nyrop · 1946
This 1946 research by J.E. Nyrop investigated how high-frequency electric currents specifically affect biological objects, focusing on tissue heating and modulation effects. The study examined radiofrequency electromagnetic field interactions with living tissue in laboratory conditions. This represents early scientific recognition that high-frequency electrical fields can produce measurable biological effects beyond simple heating.