Research on electromagnetic fields from magnetic resonance imaging, combining strong static fields with RF pulses.
MRI (Magnetic Resonance Imaging) machines represent one of the most intense sources of EMF exposure you'll encounter in medical settings. These diagnostic devices generate powerful static magnetic fields up to 60,000 times stronger than Earth's magnetic field, combined with radiofrequency radiation in the 64-300 MHz range to create detailed images of your body's internal structures. While an MRI scan typically lasts 15-90 minutes, the EMF exposure during this period is extraordinarily high compared to everyday sources.
Stanislaw S. Stuchly · 1978
This 1978 Ottawa symposium brought together researchers to discuss biological effects of electromagnetic fields, particularly microwave radiation. The conference proceedings documented early scientific understanding of how EMF exposure affects living systems. This represents foundational research that helped establish the field of bioelectromagnetics during a critical period of growing technology use.
Unknown authors · 1978
This 1978 NIOSH technical report established criteria and considerations for recommended standards protecting workers from radiofrequency and microwave field exposures. The document addressed occupational safety limits for RF/microwave radiation in workplace environments. This represents early government recognition that RF and microwave exposures required formal worker protection standards.
Richard A. Tell · 1978
This 1978 EPA technical report analyzed how radiofrequency and microwave radiation is absorbed by biological tissue, specifically examining thermal safety standards used to protect people from heating effects. The study represents early government efforts to establish exposure limits based on the assumption that heating is the primary health concern from RF radiation.
Unknown authors · 1978
This 1978 technical report focused on developing measurement methods for potentially hazardous radiofrequency and microwave electromagnetic fields. The research addressed the critical need for standardized techniques to assess RF and microwave exposures that could pose health risks. This work helped establish foundational measurement protocols during the early years of EMF safety research.
Unknown authors · 1978
This 1978 government report examined health effects from radio frequency and microwave radiation exposure across various sources and frequencies. As one of the early comprehensive reviews of RF/microwave health impacts, it helped establish the foundation for understanding electromagnetic field exposure risks. The timing makes this particularly significant as it predated widespread consumer electronics and wireless technology adoption.
Arthur W. Guy · 1977
NIOSH developed a specialized laboratory system in 1977 for exposing cell cultures to radiofrequency radiation while precisely controlling temperature and field strength. This technical report describes equipment designed to study RF effects on cells under controlled conditions. The system represented an early effort to standardize laboratory methods for investigating how electromagnetic fields affect living tissue.
Arthur W. Guy · 1977
This 1977 NIOSH technical report describes the development of a radiofrequency (RF) cell culture irradiation system capable of controlling both temperature and electromagnetic field strength. The research focused on creating standardized laboratory equipment for studying how RF radiation affects living cells in controlled conditions. This represents early foundational work for understanding cellular responses to electromagnetic field exposure.
Maj R. B. Graham, Capt John M. Hemphill · 1977
This 1977 technical report outlined standardized procedures and equipment requirements for measuring radio frequency electromagnetic radiation in workplace environments to assess personnel safety hazards. The document provided guidance for conducting systematic RF surveys around transmitting equipment and establishing measurement protocols for occupational exposure assessment.
Eggert, S., Goltz, S., Kupfer, J. · 1977
This 1977 East German technical report documented the development of a specialized meter designed to measure the electrical component of radiofrequency electromagnetic fields in near-field conditions. The research focused on creating measurement tools for RF field assessment, representing early technical work in electromagnetic field monitoring capabilities during the Cold War era.
Richard A. Tell, Patrick J. O'Brien · 1977
This 1977 EPA technical investigation measured broadcast radiation intensities at Mount Wilson, California, a major transmission site hosting numerous radio and television stations. The study documented RF exposure levels from multiple broadcast antennas operating simultaneously at this critical communications hub. This research provided baseline data for understanding cumulative broadcast radiation exposure in areas with concentrated transmission facilities.
Arthur W. Guy · 1977
NIOSH researchers developed a specialized laboratory system in 1977 for exposing cell cultures to radiofrequency (RF) radiation while precisely controlling temperature and electromagnetic field strength. This technical report describes equipment designed to study how RF energy affects living cells under controlled laboratory conditions. The system represented early efforts to standardize RF exposure research and eliminate confounding variables like heat effects.
Frank M. Greene · 1977
This 1977 technical report by Frank Greene focused on developing methods to measure how much radiofrequency (RF) power biological specimens absorb when exposed to electromagnetic fields. The research addressed fundamental measurement challenges that were critical for understanding how RF energy interacts with living tissue. This work helped establish the scientific foundation for evaluating RF exposure levels in biological systems.
Unknown authors · 1977
This 1977 Occupational Safety and Health Review Commission case examined electromagnetic field and radiation safety concerns at Swimline Corporation. The case represents early workplace EMF safety enforcement, addressing potential worker exposures to electromagnetic radiation in an industrial setting.
Frank M. Greene · 1977
This 1977 technical report examined methods for measuring how much radiofrequency energy biological specimens absorb when exposed to electromagnetic fields. The research focused on developing measurement techniques to quantify RF power absorption, which is fundamental to understanding how electromagnetic radiation interacts with living tissue.
Arthur W. Guy, Michael D. Webb, John A. McDougall · 1977
This 1977 NIOSH technical report examined how radiofrequency (RF) radiation is absorbed by human and animal bodies through mathematical modeling. The research developed computational methods to predict absorption patterns, which is fundamental for understanding how RF energy interacts with biological tissue. This work laid important groundwork for establishing safety standards and exposure limits.
Unknown authors · 1977
In 1977, the FCC issued a formal Notice of Inquiry examining its regulatory role regarding biological effects from nonionizing radiation sources like radio frequencies. This government document represents an early official acknowledgment that electromagnetic radiation could have biological impacts requiring regulatory oversight. The inquiry marked a pivotal moment when federal agencies began formally recognizing the need to address potential health effects from RF radiation exposure.
Curtis C. Johnson · 1977
This 1977 research examined how radio science methods could be applied to investigate potential biological hazards from electromagnetic fields, particularly microwaves. The study focused on developing scientific approaches for studying bioeffects and establishing safety standards. This represents early recognition that electromagnetic exposures needed systematic scientific investigation.
J. Toler, J. Seals · 1977
This 1977 NIOSH government report documented the development of a measurement system for studying how radiofrequency (RF) radiation interacts with biological tissues in both humans and animals. The research focused on measuring dielectric properties, which determine how electromagnetic fields penetrate and affect living tissue. This represents early government recognition that understanding RF-tissue interactions was important for worker safety and public health.
John M. Osepchuk · 1977
This 1977 technical report from IEEE's Committee on Man and Radiation (COMAR) examined biological effects of electromagnetic radiation, particularly microwaves and other non-ionizing radiation sources. The document represents early institutional efforts to establish safety standards and research priorities for EMF exposure. This work helped shape the foundation of modern EMF safety guidelines still used today.
NEUKOMM Peter A. · 1977
This 1977 engineering research examined the technical challenges of designing small antennas that could be mounted directly on the human body for biomedical telemetry applications. The study focused on how body-mounted antennas perform differently than traditional antennas due to their close proximity to human tissue. This work laid important groundwork for understanding how electromagnetic fields interact with the human body when devices are worn or implanted.
Arthur W. Guy, Michael D. Webb, John A. McDougall · 1977
This 1977 government study examined how radiofrequency radiation is absorbed by human and animal bodies, creating mathematical models to predict absorption patterns. The research established foundational methods for understanding how RF energy penetrates and distributes throughout biological tissues. This work became crucial for developing safety standards and exposure limits still used today.
J. Toler, J. Seals · 1977
This 1977 NIOSH government report documented the development of measurement systems for studying how radiofrequency (RF) electromagnetic fields interact with human and animal tissue. The research focused on measuring dielectric properties, which determine how biological tissues absorb and conduct electromagnetic energy. This work provided foundational data for understanding RF exposure effects in living organisms.
J. Toler, J. Seals · 1977
This 1977 NIOSH government report documented the development of a measurement system for studying how radiofrequency radiation interacts with human and animal tissue at the cellular level. The research focused on measuring dielectric properties, which determine how biological tissues absorb and respond to RF energy. This foundational work helped establish scientific methods for understanding RF exposure effects in living organisms.
Frank M. Greene · 1977
This 1977 technical report by Frank Greene focused on developing methods to measure how much radiofrequency (RF) power biological specimens absorb when exposed to electromagnetic fields. The research established foundational measurement techniques for quantifying RF energy absorption in living tissue, which became critical for understanding potential health effects from wireless technologies.
John M. Osepchuk · 1977
This 1977 IEEE technical report by J. Osepchuk examined microwave radiation bioeffects as part of the Committee on Man and Radiation (COMAR) activities. The document represents early institutional efforts to assess non-ionizing radiation health impacts during the emergence of microwave technology. This work contributed to foundational understanding of electromagnetic field interactions with biological systems.