Browse 8,655 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 1,361 studies from Glaser RF/Microwave Archive with extracted diagrams
H. J. WASSERMAN, W. LEVIN · 1979
Researchers tested shortwave diathermy electrodes implanted in a tissue phantom to create uniform heating patterns. They found that specific electrode configurations could produce controlled, localized heating suitable for cancer treatment. This 1979 study helped establish techniques for using radiofrequency energy in medical hyperthermia therapy.
A. W. J. DAWKINS et al. · 1979
This 1979 study examined how water molecules bound to biological structures absorb microwave energy differently than free water. Researchers found that bound water absorbs up to five times more microwave energy than free water, particularly around 1 GHz frequencies. This discovery helps explain why microwaves can have biological effects at the molecular level.
KENNETH R. FOSTER et al. · 1979
Researchers measured how dog brain tissue responds to microwave frequencies from 0.01 to 10 GHz, finding that grey and white matter have different electrical properties that change predictably with frequency. The study revealed that brain tissue contains about 70% water in grey matter and 35% in white matter, with some water not contributing to electrical responses above 1 GHz.
Lawrence E. Larsen, John H. Jacobi · 1979
Researchers developed a microwave imaging system using 3.9 GHz radiation to create detailed pictures of a dog kidney's internal structure. The technology successfully distinguished between different kidney regions including the cortex, medulla, and collecting system. This early study explored using microwave radiation as a medical imaging tool.
Sol M. Michaelson · 1979
This 1979 research examined radiation hazards across the electromagnetic spectrum in workplace settings, focusing on occupational health risks from microwave, laser, and optical radiation sources. The study addressed the growing need to understand and protect workers from various forms of electromagnetic radiation exposure in industrial and technical environments.
Paul S. Ruggera · 1979
This 1979 government study measured electromagnetic field levels near CB (Citizens Band) radio antennas to understand exposure patterns in close proximity to these transmitters. The research examined RF field strength at various distances from CB antennas, which was important for establishing safety guidelines during the CB radio boom of the 1970s.
Robert Mosenkis · 1979
This 1979 evaluation examined diathermy units, which use high-frequency electromagnetic energy to generate heat in body tissues for medical treatment. The analysis found that therapeutic diathermy's effectiveness has been widely debated, with treatment doses poorly controlled and claims often exaggerated or unsupported by reliable clinical data.
James P. Dilger et al. · 1979
Researchers exposed rats to 2450 MHz microwave radiation (the same frequency used in microwave ovens) and found the animals changed their heat-seeking behavior even when their core body temperature didn't change. The rats pressed a lever less frequently to turn on a warming lamp when exposed to microwaves, suggesting they were detecting internal heating that standard temperature measurements couldn't detect.
Clinton Cox, Betsy Egan, Ed Foley, Bob Herrick · 1979
In 1978, NIOSH surveyed RF heat sealing equipment at a Connecticut manufacturing plant to assess worker radiation exposure levels. They found 10 of 11 heat sealers produced electric fields exceeding 200 V/M, identifying a potential worker population for future health studies. This was part of NIOSH's effort to establish whether occupational RF exposure causes reproductive health effects.
David E. Janes, Jr. · 1979
This 1979 technical study by Janes examined radiation leakage from electronic equipment and measured the electromagnetic fields people might be exposed to. The research focused on surveying actual emission levels from various radiofrequency sources to understand potential human exposure scenarios. This type of foundational measurement work helped establish early understanding of EMF exposure levels in real-world environments.
Clinton Cox, Ed Foley, Betsy Egan, Bob Herrick · 1979
NIOSH conducted a 1978 workplace survey at a Connecticut company to measure RF radiation from industrial heat sealers and identify workers for potential health studies. They found that 10 of 11 heat sealers produced electric field levels exceeding 200 V/M, well above typical background levels. This survey was part of early efforts to understand occupational RF exposure risks before widespread wireless technology adoption.
William A. Herman, Donald M. Witters, Jr. · 1979
Government researchers in 1979 tested cheap microwave detection instruments that consumers and repair shops were using to check microwave oven safety. They found significant reliability problems with these devices, which could either miss real hazards or trigger false alarms that cost consumers unnecessary repair visits.
Pacific Measurements Inc. · 1979
This 1979 technical report describes the Model 1045 ultra-fast RF power meter, a specialized instrument for measuring radiofrequency and microwave power levels. The device was designed for automatic testing applications, featuring detector and multiplexer components to measure power across various frequency ranges. While this is technical documentation rather than health research, such instruments are essential for measuring EMF exposures that scientists later study for biological effects.
Paul S. Ruggera · 1979
This 1979 government study measured electromagnetic field levels near Citizens Band (CB) radio antennas to understand exposure patterns in close proximity to these transmitters. CB radios operate around 27 MHz and were extremely popular communication devices in the late 1970s. The research provided important baseline data for assessing RF exposure from CB antenna installations.
A. Ripamonti, R.B. Frankel, E.M. Ettienne · 1979
Researchers exposed muscle tissue from chicks to a 0.7 tesla magnetic field for up to 60 minutes, then measured calcium transport in cellular structures. They found that longer magnetic field exposure increased both the rate and total amount of calcium uptake by the muscle cells. This suggests magnetic fields can alter fundamental cellular processes that control muscle contraction.
Medical Instrument Research Associates, Inc. · 1979
This 1979 technical report documented diagnostic and surgical instruments used in ophthalmology, including fundus cameras and ophthalmoscopes. While specific EMF measurements weren't detailed, these medical devices represent an early generation of electronic equipment that exposed both patients and healthcare workers to electromagnetic fields during eye examinations and procedures.
C.T. Gaffey, T.S. Tenforde · 1979
Researchers exposed rats and dogs to static magnetic fields ranging from 0.5 to 22,000 gauss while monitoring their heart activity through electrocardiograms. The study examined how different magnetic field strengths and animal positioning affected cardiovascular function. This early research helped establish methods for studying magnetic field effects on the heart.
D.D. N'GUYEN et al. · 1979
This 1979 French technical study examined microwave heating and thermography for medical and industrial applications. Researchers developed automatic probe-applicators (open waveguide sections) and found that microwave penetration depth depends on both the material's properties and the probe characteristics. The work laid groundwork for combining microwave heating with thermal imaging technology.
John R. Thomas, Linda S. Burch · 1979
Researchers exposed rats to low-level pulsed microwave radiation at 1 milliwatt per square centimeter while giving them chlordiazepoxide, a sedative drug. The microwave exposure made the drug's behavioral effects stronger, even though the radiation alone had no apparent impact on the rats' behavior.
Thomas F. Budinger · 1979
This 1979 study by researcher Budinger established safety thresholds for NMR (nuclear magnetic resonance) imaging, which later became MRI technology. The research identified specific limits for RF power, static magnetic fields, and field variation rates that would prevent health hazards in medical imaging. These early guidelines helped shape safety protocols still used in modern MRI facilities.
Unknown authors · 1979
This 1979 comprehensive review examined the biological effects of nonionizing electromagnetic radiation across multiple scientific disciplines. The report compiled research from aerospace medicine, toxicology, epidemiology, and other fields to assess EMF health impacts. This early systematic analysis helped establish the foundation for understanding how electromagnetic fields affect living systems.
Unknown authors · 1979
This 1979 government report compiled early research on nonionizing electromagnetic radiation effects across multiple scientific disciplines. The comprehensive review covered aerospace medicine, environmental health, toxicology, and behavioral sciences during the early era of EMF research. It represents one of the first systematic attempts to catalog potential biological effects of electromagnetic fields.
Jana Pazderova-Vejlupkova, M.D., Marcel Josifko · 1979
Researchers exposed growing rats to pulsed microwave radiation at 2,736 MHz for 7 weeks and found significant changes in blood composition, including reduced white blood cell counts and lower hematocrit values. The blood changes gradually disappeared within 10 weeks after exposure ended, but the rats showed slower weight gain during recovery.
D.D. N'Guyen, A. Mamouni, Y. Leroy, E. Constant · 1979
This 1979 technical study explored combining microwave heating with microwave temperature monitoring in the same system for medical applications. Researchers demonstrated that microwaves could both heat living tissue to controlled temperatures (around 43°C) and simultaneously measure that temperature using microwave radiometry. The dual-purpose system was designed for cancer hyperthermia therapy and diagnostic imaging.
A. Mamouni, D.D. N'Guyen, M. Robillard, M. Chivé, Y. Leroy · 1979
This 1979 research explored using microwave thermal noise detection to measure body temperature beneath the skin without invasive procedures. The study demonstrated that microwaves could detect heat patterns in living tissue, with potential medical applications including cancer detection and brain temperature monitoring.