Unknown authors · 1977
In 1977, Health and Welfare Canada conducted a safety assessment of electromagnetic radiation exposure levels in and around Toronto's CN Tower, which was then the world's tallest structure. This government report evaluated potential health risks from the tower's broadcast antennas and transmission equipment. The study represents an early official examination of EMF exposure from major broadcasting infrastructure in urban environments.
Unknown authors · 1977
This 1977 government report examined electromagnetic radiation safety around Toronto's CN Tower, focusing on radio frequency and television transmission exposures. The study assessed potential health risks from the tower's broadcasting operations, which was significant given the CN Tower's status as one of the world's tallest communication structures at the time.
C.A.L. Bassett et al. · 1977
This 1977 study by Dr. Bassett examined using pulsed electromagnetic fields to heal bone fractures that had failed to heal naturally or through surgery. The research focused on treating pseudarthroses and non-unions (broken bones that won't mend properly) with ELF electromagnetic field therapy. This represents early medical research into therapeutic applications of electromagnetic fields for bone regeneration.
John C. H. Wang · 1977
This 1977 technical report by Wang examined environmental electromagnetic radiation levels from broadcast transmitters, measuring power density and field strength in real-world settings. The study focused on assessing potential radiation hazards and biological effects from RF emissions in the environment. This represents early systematic documentation of EMF exposure levels that people encounter from broadcasting infrastructure.
WIESLAW WIKTOR-JEDRZEJCZAK et al. · 1977
Researchers exposed mice to microwave radiation at 2450 MHz (the same frequency used in microwave ovens and some WiFi) for 30 minutes and found significant changes in immune system cells in the spleen. A single exposure increased complement-receptor positive immune cells, while repeated exposures also increased antibody-producing cells, suggesting the immune system was responding to the radiation exposure.
Bassen, H., P. Herchenroeder, A. Cheung, S. Neuder · 1977
Researchers developed a miniaturized probe to measure microwave radiation inside biological tissues and experimental models. The 1mm x 2mm device accurately measured electromagnetic fields at 915 and 2450 MHz frequencies inside muscle-like materials. This technology enables scientists to precisely determine how much microwave energy penetrates living tissue.
G. Kantor, D. M. Witters, J. W. Greiser · 1977
This 1977 engineering study describes the design of a specialized microwave applicator for medical diathermy treatments. The device was engineered to produce circularly polarized electromagnetic fields for more uniform tissue heating while minimizing radiation leakage. This represents early research into controlling microwave energy delivery for therapeutic purposes.
James H. Botsford · 1977
This 1977 conference paper compared two methods for measuring heat stress: the BOTSBALL thermometer and the WBGT (Wet Bulb Globe Temperature) index. The research examined how well these different measurement techniques assess physiological stress from heat exposure. This type of environmental measurement research provides important context for understanding how various stressors, including electromagnetic fields, affect human physiology.
M. O'Donnell, J. W. Mimbs, B. E. Sobel, J. G. Miller · 1977
Researchers measured how ultrasound waves pass through heart muscle tissue at different temperatures and time periods after removal from animals. They found that ultrasound absorption in heart tissue decreases by about 20% as temperature increases from room temperature to body temperature. The tissue remained stable for 4 hours at cool temperatures but showed changes at warmer temperatures.
John R. Klepper et al. · 1977
This 1977 study developed ultrasonic tomography techniques to measure tissue properties by analyzing how sound waves interact with biological materials. Researchers used excised dog hearts to test methods for reducing artifacts that interfere with accurate tissue imaging. The work focused on improving medical imaging technology rather than studying health effects.
André-Jean BERTEAUD, Michèle DARDALHON · 1977
This 1977 French review examined biological effects of microwave radiation across molecular, cellular, and tissue levels. The authors found that while numerous studies showed effects at low and medium power levels, the evidence wasn't sufficient to establish safety standards below thermal (heating) thresholds. The review highlighted frequency-dependent effects and called for better understanding of microwave interactions with living systems.
Christopher H. Dodge, Zorach R. Glaser · 1977
This 1977 review examined international research on microwave and radiofrequency radiation effects from 1970-1976, comparing findings between Western and Soviet scientists. The analysis revealed growing evidence that EMF exposure could affect nervous system function in animals at power levels below what Western standards considered harmful, though clinical studies in humans showed conflicting results between regions.
A. Bruner · 1977
A 1977 study examined approximately 600 workers at electromagnetic pulse (EMP) simulator facilities over multiple years through comprehensive annual physical examinations. The researchers found no adverse health effects attributable to EMP exposure among these occupationally exposed personnel. This represents one of the early systematic reviews of EMF health effects in workplace settings.
R. S. Molday, S. P. S. Yen, A. Rembaum · 1977
Researchers applied electric pulses of a few thousand volts per centimeter to human red blood cells for microseconds, causing the cell membranes to develop controlled pores that could later reseal. This 1977 study demonstrated that brief, intense electric fields can temporarily breach cellular barriers in predictable ways.
C. H. Dodge, Z. R. Glaser · 1977
This 1977 review of international microwave and radiofrequency research found growing evidence that electromagnetic fields can affect nervous system function in animals at power levels far below those considered safe in Western countries. The study highlighted a massive gap between Soviet exposure limits (0.01 mW/cm²) and U.S. standards (10 mW/cm²) - a 1000-fold difference.
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.
John C. H. Wang · 1977
This 1977 FCC technical report studied environmental electromagnetic radiation levels from broadcast transmitters, measuring field strength and power density across different locations. The research was part of early efforts to document baseline EMF exposure levels in communities near radio and television broadcasting facilities. This work helped establish measurement protocols that would inform later EMF exposure guidelines.
WIESLAW WIKTOR-JEDRZEJCZAK et al. · 1977
Researchers exposed mice to 2450 MHz microwave radiation for 30 minutes and found significant increases in specific immune cells in the spleen. The effect became even stronger with repeated exposures, suggesting microwave radiation can alter immune system function in mammals.
Lövsund, P., Öberg, P.A., Nilsson, S.E.G. · 1977
Swedish researchers exposed frog retinal nerve cells to extremely low frequency (ELF) magnetic fields at levels known to cause visual disturbances in humans (0-80 mT, 10-50 Hz). They found that these nerve cells responded to magnetic field changes just like they respond to light, with the response varying based on field strength and frequency.
David L. Conover · 1977
This 1977 conference paper examined workplace safety issues for workers exposed to radio frequency radiation in the 10-40 MHz range, focusing on industrial hygiene monitoring and measurement challenges. The research addressed practical problems with field strength monitors and calibration methods used to assess personnel exposure levels. This represents early recognition that RF workplace exposures needed systematic safety evaluation and proper measurement protocols.
Kinn JB · 1977
This 1977 study measured how much 2450 MHz microwave radiation (the same frequency used in microwave ovens) was absorbed by rats and mice of different sizes. Researchers found that even animals of similar weight could absorb radiation at vastly different rates - up to seven times more in some cases than others.
International Radiation Protection Association · 1977
This 1977 technical report by the International Radiation Protection Association provided comprehensive overviews on multiple types of nonionizing radiation, including microwave, radiofrequency, ultraviolet, ultrasound, and laser radiation. The document examined radiation protection standards and safety considerations across these different energy forms. This represents early systematic analysis of nonionizing radiation health effects during a period when wireless technology was beginning to expand.
Tikhonchuk VS · 1977
This 1977 Soviet research examined how mice recovered from microwave radiation exposure at 2400 MHz, the same frequency used in modern WiFi and microwave ovens. The study focused on biological recovery processes following microwave irradiation. This early research provides historical context for understanding how microwave frequencies affect living organisms.
Peter E. Glaser · 1977
This 1977 technical analysis examined the feasibility of satellite solar power systems (SSPS) that would collect solar energy in space and beam it to Earth using microwaves. The study outlined the technology requirements, economic projections, and potential environmental impacts, including concerns about microwave biological effects from the power transmission beams.
Unknown authors · 1977
This 1977 technical report established standardized procedures for field testing microwave ovens to ensure they met safety compliance standards. The document provided testing protocols to measure microwave radiation leakage from ovens in real-world conditions. This work helped establish the foundation for consumer protection standards that remain relevant today.
