Alfred W. Richardson et al. · 1950
This 1950 study examined how microwave radiation affects blood flow and tissue temperature in dogs. Researchers found that microwaves effectively heated muscle tissue and increased blood flow in peripheral structures, while short wave diathermy showed mixed results. The research helped establish early understanding of how electromagnetic fields interact with biological tissues.
England TS · 1950
This 1950 research by England examined how microwave radiation interacts with human body tissues by measuring dielectric properties. The study investigated how the human body absorbs and conducts electromagnetic energy in the microwave frequency range. This foundational work helped establish early understanding of how microwave radiation penetrates and affects human tissue.
Joseph P. Engel et al. · 1950
This 1950 study by Joseph Engel examined how microwave radiation affects bone, bone marrow, and surrounding tissues in laboratory animals. The research focused on microwave diathermy effects and tissue temperature changes. This represents some of the earliest scientific investigation into how microwave energy interacts with skeletal and blood-forming tissues.
S. E. Jacobs, Margaret J. Thornley, P. Maurice · 1950
Researchers in 1950 exposed bacteria including E. coli and Staph. aureus to 1.45 MHz radio frequency fields using external electrodes. They found that mild electrical conditions had no bacteria-killing effect, but high-intensity fields that caused rapid heating in treatment fluids were lethal to the microorganisms.
Herbert F. Newman, Seymour F. Wilhelm · 1950
This 1950 research by Newman examined testicular temperature regulation in men using thermocouples to measure temperatures within the scrotal cavity. The study investigated how environmental conditions affect the natural cooling mechanisms that keep testicles at optimal temperatures for sperm production. This foundational work established baseline data for understanding male reproductive physiology.
Alma J. Murphy, W. D. Paul, H. M. Hines · 1950
This 1950 study measured how different microwave and infrared wavelengths heated living and dead animal tissue at various depths. Researchers tested wavelengths from 3 cm to 1,600 cm to compare their heating patterns and temperature gradients in tissue. The study provided early evidence that microwaves penetrate and heat biological tissue differently than other forms of electromagnetic energy.
Robert Wallis · 1950
This 1950 conference paper examined the evolution of scientific understanding about how high-frequency electromagnetic currents and waves affect living organisms. The research reviewed the development of concepts in medical applications like diathermy (therapeutic heating) and broader biological effects. This represents early scientific recognition that electromagnetic fields could have measurable impacts on biological systems.
H. J. MULLER · 1950
This 1950 research by Nobel laureate H.J. Muller examined how radiation damages genetic material, including chromosomes and hereditary information. The study established foundational understanding of radiation-induced mutations that would later inform research into electromagnetic field effects on DNA. This work helped establish the scientific framework for understanding how various forms of radiation interact with cellular genetic systems.
Hubner · 1950
This 1950 study examined bedside ultrashort wave diathermy treatment, which used radiofrequency electromagnetic fields for therapeutic heating of body tissues. The research investigated medical applications of RF energy that operated at frequencies similar to those used in modern wireless devices. This represents early documentation of intentional human exposure to RF electromagnetic fields for therapeutic purposes.
T. S. England · 1950
This 1950 study measured how microwave radiation at three different wavelengths (1.27 cm, 3.18 cm, and 10 cm) interacts with human body tissues taken from surgical operations. Researchers analyzed the dielectric properties of various tissues to understand how microwaves penetrate and affect different parts of the human body. This foundational research helped establish how electromagnetic fields interact with biological tissues.
Leonard Essman, Charles S. Wise · 1950
This 1950 study exposed the lower back area of white rats to microwave radiation to investigate whether deep muscle tissue could be damaged without visible injury to the overlying skin. Researchers compared microwave thermal effects to infrared radiation effects, focusing specifically on muscle changes rather than bone damage.
J. F. HERRICK, D. G. JELATIS · 1950
This 1950 study examined how microwave energy penetrates and heats different human tissues for medical diathermy treatments. Researchers measured the dielectric properties of various tissues to understand how they absorb microwave radiation. The findings helped establish early safety parameters for therapeutic microwave heating in medical settings.
Jerome W. Gersten, Khalil G. Wakim, Frank H. Krusen · 1950
This 1950 study examined how microwaves heat human tissue and found that skin reflects most of the energy, making heating inefficient. Researchers proposed using impedance matching devices on the skin to improve energy transfer and enable targeted heating of specific tissue areas.
Unknown authors · 1950
This comprehensive review analyzed studies from the past decade examining how electromagnetic fields (EMF) from cell phones, WiFi, and power lines affect cellular oxidative stress in animals and laboratory cells. Most animal studies and many cell studies showed that both radiofrequency EMF (like cell phones) and extremely low frequency magnetic fields (like power lines) increased harmful reactive oxygen species production. The research suggests EMF exposure may impact neurological function, DNA stability, immune response, and reproduction through oxidative stress mechanisms.
Unknown authors · 1950
Researchers exposed genetically modified Alzheimer's mice to 1950 MHz radiofrequency radiation (similar to cell phone frequencies) for 3 months to see if it worsened memory problems. The EMF exposure did not make memory deficits worse or increase harmful brain protein deposits. This suggests cell phone radiation may not accelerate Alzheimer's-like brain damage, at least in this animal model.
Unknown authors · 1950
Researchers exposed rat brain immune cells (microglia) to 1950 MHz cell phone radiation at various power levels for 2 hours and monitored them for 3 days. The study found no activation of these immune cells and no inflammatory response, even at radiation levels up to 2 W/kg. This suggests that this specific frequency may not trigger brain inflammation in laboratory conditions.
Unknown authors · 1950
Researchers exposed rat brain cells to 1950 MHz radiofrequency radiation (3G UMTS signal) for 24 hours at high intensity levels to test for DNA damage, cell death, and other harmful effects. The study found no detectable biological effects despite using radiation levels higher than most previous research. This suggests that short-term exposure to 3G frequencies may not cause immediate cellular damage in this laboratory model.
Unknown authors · 1950
This comprehensive review examined a decade of research on how electromagnetic fields (EMF) from cell phones, WiFi, and power lines create oxidative stress in animals and cells. Most studies found that both radiofrequency radiation and extremely low frequency magnetic fields increase harmful reactive oxygen species, potentially affecting brain function, DNA stability, immune response, and reproduction. The findings add scientific weight to concerns about widespread EMF exposure from our increasingly connected world.
Unknown authors · 1950
This comprehensive review analyzed a decade of animal and cell studies examining how electromagnetic fields (EMF) from cell phones and power lines create oxidative stress in living organisms. The research found that most animal studies and many cell studies showed increased production of harmful reactive oxygen species when exposed to radiofrequency and extremely low frequency EMF. These findings matter because oxidative stress can damage cells and affect critical functions like brain health, DNA stability, immune response, and reproduction.
Ira Gore, Norman H. Isaacson · 1949
This 1949 autopsy study examined 17 patients who died from hyperpyrexia (extremely high fever) during fever therapy, a medical treatment once used for conditions like syphilis. Researchers documented the pathological changes that occurred when body temperature reached dangerous levels, providing insights into how extreme heat affects human tissues and organs.
Harold G. Scheie, Bourne Jerome · 1949
This 1949 research by Dr. Harold Scheie examined electrocoagulation techniques applied to the sclera (the white outer layer of the eye) in laboratory animals. The study investigated how electrical coagulation affects eye structure and function, with particular focus on conditions like retinal detachment and glaucoma. This early work helped establish foundational knowledge about electrical effects on ocular tissues.
Gore I, Isaacson NH · 1949
This 1949 autopsy study examined 17 patients who died from hyperpyrexia (extremely high fever) during fever therapy treatments. Researchers analyzed tissue damage and organ changes to understand how extreme heat affects the human body. While not directly EMF-related, this research provides important baseline data on thermal effects that helps inform modern RF exposure safety standards.
W. H. Oldendorf · 1949
This 1949 study by researcher Oldendorf investigated how microwave radiation could create focused brain lesions in rabbits' cerebral cortex. The research demonstrated that microwave energy could produce specific, localized damage to brain tissue. This represents some of the earliest scientific documentation that microwave radiation can cause measurable neurological damage in living tissue.
George Birnbaum · 1949
This 1949 study developed a cavity perturbation method to measure how electromagnetic fields interact with different materials by analyzing their dielectric properties. The research established fundamental techniques for understanding how microwaves penetrate and affect both solid and liquid substances. This foundational work helped create the scientific framework we use today to measure EMF absorption in biological tissues.
W. W. Salisbury, John W. Clark, H. M. Hines · 1949
This 1949 study by Salisbury exposed animals to high-intensity 12-centimeter microwave radiation and discovered that dangerous heat buildup occurred beneath the skin surface without triggering normal warning signals like fever or pain. The research revealed that microwave radiation could cause internal tissue heating that the body's natural protection mechanisms couldn't detect.
