Russell L. Carpenter, Clair A. Van Ummersen · 1967
This 1967 study exposed rabbit eyes to microwave radiation at frequencies from 2.45 to 10 GHz and found it caused cataracts in the lens. The researchers discovered that the location and type of cataract depended on how the eye was exposed, and that repeated shorter exposures could accumulate to cause damage. Importantly, the evidence suggested these cataracts weren't simply caused by heating effects.
Sol M. Michaelson et al. · 1967
Researchers exposed dogs to 1240 MHz pulsed microwaves at 50 mW/cm² for six hours daily over five days, finding significant changes in heart, lung, thyroid, and blood cell functions. Dogs previously exposed to X-rays showed even greater sensitivity to the microwave radiation. The scientists concluded these functional changes, if extrapolated to humans, would indicate compromised protective capabilities and homeostatic insufficiency.
M. Maroncelli, G. Ferraro · 1967
This 1967 Italian study investigated radiofrequency-based physical therapy methods for treating chronic middle ear inflammation (otitis). The research examined RF diathermy alongside other therapeutic approaches like galvanic therapy and ultrasound treatment. This represents early medical application of electromagnetic fields for therapeutic purposes.
Russell L. Carpenter, Clair A. Van Ummersen · 1967
This 1967 study exposed rabbit eyes to microwave radiation at frequencies from 2.45 GHz to 10 GHz and found it caused cataracts in the lens. The location of the cataracts depended on how the radiation was delivered, and researchers noted the damage wasn't simply from heating but from some other property of the microwaves.
BUSCO, R. · 1967
This 1967 technical report by researcher R. Busco examined the existing scientific knowledge about how radar waves affect living organisms and reviewed protective devices available at the time. The study represents an early attempt to systematically assess radar's biological effects and safety measures during the technology's rapid military and civilian expansion.
Julius H. Fanney Jr., Charles H. Powell · 1967
This 1967 technical review examined field measurement techniques for non-ionizing electromagnetic radiation including ultraviolet, infrared, and microwave energies. The study evaluated available instruments for detecting these energies in workplace settings and identified the need for better measurement tools with improved spectral response and reliability.
George A. Hall, William A. Schlegel · 1967
Researchers tested how diathermy (electromagnetic heating) and cryosurgery (freezing) affected the strength of rabbit eye tissue. They found diathermy significantly weakened the sclera (the eye's outer wall), while freezing treatment caused little to no damage. This suggests electromagnetic heating can compromise tissue integrity in ways that mechanical alternatives do not.
Robert O. Becker, David G. Murray · 1967
This 1967 study by researcher Robert O. Becker discovered that very small electrical currents can trigger cellular dedifferentiation in amphibians, where mature red blood cells reverse their development to become stem-like cells capable of healing bone fractures. Becker found that bone tissue acts like a semiconductor, converting mechanical stress into electrical signals that control this healing process.
R. A. E. Thomson et al. · 1967
This 1967 study examined how microwave radiation affects dogs' response to X-ray radiation, focusing on survival rates and white blood cell changes when animals were exposed to both types of radiation together. The research investigated whether microwave exposure made X-radiation more lethal or altered immune system responses. This represents early scientific recognition that different types of electromagnetic radiation might interact in harmful ways.
Ban K · 1967
Japanese researchers exposed 50 mice to microwave radiation at various power densities (6.8 to 43.4 mW/cm²) for 5 minutes daily over 7 weeks. Despite observing behavioral changes like face washing and avoidance behaviors at higher power levels, microscopic examination of organs showed no tissue damage. Only one mouse died during the study period.
Garry D. Hanneman, D.V.M. · 1967
Researchers exposed female mice to a powerful 14,000 Oersted magnetic field for 24 hours and measured changes in their urine. The exposed mice showed dramatic increases in sodium (83% higher) and potassium (60% higher) excretion compared to unexposed control mice, indicating significant disruption of normal kidney function.
S. F. Cleary, B. S. Pasternack · 1966
This 1966 study by Cleary examined eye lens changes in workers exposed to microwave radiation. The research found evidence of lenticular (lens) alterations in people working with high-powered radar and microwave equipment. This was among the first studies to document potential eye damage from occupational microwave exposure.
Luke S. Gournay · 1966
This 1966 study examined how high-intensity laser light creates acoustic stress waves in liquids through rapid heating. Researchers measured the pressure transients generated when Q-switched ruby lasers heat liquids, finding their thermodynamic model accurately predicted the stress patterns across different liquid properties and electromagnetic intensities.
Cleary SF, Pasternack BS · 1966
This 1966 study by Dr. S.F. Cleary examined biological effects of microwave radiation on humans, marking an early recognition that non-ionizing EMF could produce detectable biological changes. The research emerged as high-powered radar technology made it possible to generate microwave fields intense enough to study biological impacts. This was groundbreaking work establishing that lower-energy radiation like microwaves could affect living systems.
Trukhan E M · 1966
This 1966 study explored whether proteins and nucleic acids (DNA/RNA) act like semiconductors that can conduct electricity. The researchers investigated the theoretical possibility that biological molecules have electrical properties similar to electronic materials, though specific experimental results weren't detailed in the available abstract.
Ikeda H. · 1966
This 1966 Japanese study tested how well common building materials block microwave radiation at 2450 MHz (the same frequency used in microwave ovens). Researchers found that 10 cm thick concrete blocked 99.2% of radiation, while wood (lauan) only blocked 81%, and glass was largely ineffective at just 51% blocking.
Carl M. Olsen, Clifford L. Drake, Stuart L. Bunch · 1966
This 1966 study examined how microwave energy affects various microorganisms and found that microwaves killed bacteria and fungi through non-thermal mechanisms distinct from conventional heating. The research showed microwave exposure reduced bacterial populations by up to 99% and altered cellular respiration in ways that simple heat treatment could not explain.
A. N. Bereznitskaya · 1966
Soviet researchers in 1966 studied how 10-centimeter microwave radiation affected reproductive capacity in female mice. This early research examined whether microwave exposure could impact fertility and breeding success in laboratory animals. The study represents one of the earliest investigations into how electromagnetic radiation might interfere with mammalian reproduction.
William A. Palmisano, Alois Peczenik · 1966
This 1966 research by Palmisano examined microwave hazards and exposure criteria, focusing on biological effects and thermal influences from microwave radiation. The study contributed to early understanding of how microwaves affect living organisms through heating effects. This work helped establish foundational knowledge for microwave safety standards during the early development of microwave technology.
Shiro Takashima · 1966
This 1966 study examined whether radio-frequency electric fields between 1 and 60 MHz could damage biological molecules like DNA and enzymes. Using pulsed fields and cooling to avoid heating effects, researchers found no changes to the structure of DNA or the activity of alcohol dehydrogenase enzyme even after prolonged high-intensity exposure.
Paul H. Carr · 1966
This 1966 technical report examined how microwave radiation generates harmonic phonons (sound waves at the atomic level) through radiation pressure and phonon interactions. The research explored the fundamental physics of how microwave energy transfers into matter at the molecular scale. This work helped establish early understanding of how microwave radiation interacts with biological materials.
Yu. A. Trifonov, I. A. Utina · 1966
This 1966 study examined L-type retinal cells in tortoises, finding that these cells produce electrical responses without changing their membrane resistance. Unlike typical nerve cells, these horizontal retinal cells showed electrical activity that didn't correlate with membrane potential changes, suggesting a unique mechanism of cellular response.
L. N. TUMARKINA, N. A. DUBROVSKII · 1966
This 1966 Soviet study examined how humans perceive amplitude-modulated signals (sounds that vary in loudness over time) using white noise and pure tones. Researchers investigated what auditory cues people use to detect these modulated signals and how training improves perception. The study explored fundamental mechanisms of how our hearing system processes information-carrying sounds.
E. M. TRUKHAN · 1966
This 1966 study investigated whether proteins and nucleic acids (DNA/RNA components) can conduct electricity like semiconductors. The research examined the mobility of electrical charges in biological compounds, exploring whether living tissues have organized structures that allow electrical current to flow through them.
E. J. Valtonen · 1966
This 1966 study examined how microwave radiation affects mast cells in rodents, specifically investigating the formation of abnormally large, degenerative mast cells. The research focused on changes in peritoneal fluid and explored both thermal and non-thermal effects of microwave exposure on these important immune system cells.