Chai SY, Vogelhut PO · 1967
Researchers used 9.36 GHz microwave radiation to study how water molecules bind to hemoglobin protein. They found that microwaves could detect changes in water structure around the protein, showing a linear relationship up to specific hydration levels. Above certain water concentrations, ice-like structures formed on the hemoglobin surface.
Mishina IM · 1967
Soviet researchers in 1967 developed a calorimetric method to measure thermal effects from the Luch-58 ultrahigh frequency medical device. This study focused on quantifying heat generation in tissues exposed to microwave therapy equipment. The research represents early efforts to understand and measure the heating effects of medical microwave devices.
Chizhenkova RA · 1967
This 1967 Soviet research examined how rabbit brain tissue responds electrically to various electromagnetic field exposures, measuring changes in brain wave patterns (EEG). The study represents early scientific investigation into how EMF exposure affects neural activity in living animals. While specific findings aren't available, this research contributed to foundational understanding of electromagnetic field interactions with brain tissue.
G. G. Knickerbocker, W. B. Kouwenhoven, H. C. Barnes · 1967
Researchers exposed 22 male mice to intense 60 Hz electric fields (4 kV/inch) for nearly 1,500 hours over 10.5 months to test for health effects. The exposed mice showed no changes in health or reproduction, but their male offspring showed altered growth patterns. This early study examined power frequency fields at levels far exceeding typical household exposure.
Itsuo Yamaura, Shiko Chichibui · 1967
Researchers exposed crayfish and prawn nerve clusters to 11 gigahertz microwave radiation at an available power of 100 W/mm². The microwaves suppressed normal nerve firing patterns, with stronger radiation causing faster suppression. This 1967 study provided early evidence that microwave radiation can directly disrupt nervous system function in living organisms.
R. A. CHIZHENKOVA · 1967
Soviet researchers exposed rabbits to magnetic fields and microwave radiation, then measured brain wave changes using EEG technology. They found that both constant magnetic fields (460 oersteds) and microwave frequencies caused distinct brain wave alterations, including increased 'spindles' and slow, high-amplitude waves. Even after surgically removing key brain structures, the electromagnetic effects persisted, suggesting direct brain stimulation rather than reflex responses.
Maroncelli M, Ferraro G · 1967
This 1967 study investigated a new physical therapy approach using electromagnetic fields (diathermy) to treat chronic simple otitis, a persistent ear infection condition. The research examined radiofrequency electromagnetic field therapy as a treatment method for patients with ongoing ear inflammation. This represents early medical research into therapeutic applications of EMF technology.
Samuel A. Goldblith, Daniel I. C. Wang · 1967
Researchers exposed E. coli bacteria and B. subtilis spores to 2,450 MHz microwave radiation and compared their death rates to conventional heating. They found that microwaves killed the microorganisms at exactly the same rate as regular heat at the same temperature. This suggests microwaves work purely through heating effects, not through any special electromagnetic properties.
W. Stodolnik-Baranska · 1967
In 1967, researchers discovered that microwave radiation could transform human lymphocytes (white blood cells) into blast-like cells in laboratory cultures. This transformation normally requires chemical stimulants, but microwaves alone triggered the same cellular changes. The finding suggests microwave radiation can fundamentally alter immune cell behavior.
Kraft D, Emmrich K, G'unther K, Ursinus K · 1967
This 1967 research examined how physical influences affect implanted cardiac pacemakers, representing some of the earliest scientific investigation into electromagnetic interference with medical devices. The study explored various environmental factors that could disrupt pacemaker function, laying groundwork for understanding how electronic devices interact with implanted cardiac equipment.
W. B. Kouwenhoven et al. · 1967
This 1967 Johns Hopkins study tracked 11 power line workers exposed to high-voltage 60 Hz electric fields over 42 months, including conventional workers using insulated tools and others working barehanded from aerial buckets connected to live wires. The research examined physiological impacts of occupational AC electric field exposure and evaluated protective equipment effectiveness.
H.-J. Körner · 1967
This 1967 German research examined radar radiation hazards and microwave safety concerns for human health. The study focused on high-frequency electromagnetic fields from radar systems, addressing potential biological effects and safety standards. This represents early scientific recognition that radar and microwave technologies posed potential health risks requiring investigation.
Milton M. Zaret · 1967
This 1967 study by Dr. Milton Zaret examined how microwave radiation affects rabbit eyes, specifically investigating lens damage and cataract formation. The research focused on understanding the eye's vulnerability to microwave exposure, which was becoming a growing concern as radar and microwave technologies expanded. This work helped establish early understanding of how electromagnetic radiation can damage delicate eye tissues.
Unknown authors · 1967
Researchers in 1967 developed a technique to measure how vegetation interacts with microwave radiation at frequencies around 8-10 GHz. They found that fresh plants with 65% moisture content had a dielectric constant of approximately 29, which dropped dramatically to about 1.5 as the plants dried out. This demonstrates that water content is the primary factor determining how plants absorb and reflect microwave energy.
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.