Unknown authors · 1972
The guide defines radio frequency and microwave bands from 10 MHz to 300 GHz and describes common sources such as radar, communication systems, medical diathermy, and microwave ovens. It explains that microwaves interact with tissue mainly by converting electromagnetic energy to heat, with penetration depth depending on wavelength. ANSI recommends a maximum power density of 10 mW/cm² for exposures of 0.1 hour or more. ACGIH sets a threshold limit value of 10 mW/cm² for continuous exposure and 25 mW/cm² for intermittent exposure.
L. Birenbaum · 1972
This 1972 research by Birenbaum examined human exposure to microwave radiation and its potential health hazards, with particular focus on cataract formation and other biological effects. The study contributed to early discussions about establishing safety standards for nonionizing radiation exposure. This represents foundational work in understanding microwave bioeffects during the early development of microwave technology.
Grechuskina, V.A. · 1972
Cataracts developed in 23 rabbits, appearing first in the posterior lens suture and later regressing over two to three months. During cataract formation, ascorbic acid and thiol groups in the lens decreased sharply. During regression, ascorbic acid and thiol group levels returned to normal.
L. Birenbaum · 1972
This 1972 research examined potential health hazards from microwave radiation exposure, with particular focus on cataract formation and the adequacy of existing safety standards. The study contributed to early understanding of how nonionizing radiation affects human health, specifically addressing concerns about microwave-induced eye damage that were emerging in occupational settings.
Donald I. McRee · 1972
This 1972 review examined the environmental health implications of microwave radiation, focusing on biological effects and dielectric properties of electromagnetic fields. The research explored how microwave frequencies interact with biological systems and their potential environmental consequences. This early environmental health assessment helped establish foundational understanding of microwave radiation's biological impacts.
Grechuskina, V.A. · 1972
This 1972 Soviet study examined how microwave radiation exposure caused cataracts in rabbits, documenting the physical changes to the eye's lens and associated biochemical alterations. The research provided early evidence that microwave energy could damage the crystalline lens structure, contributing to our understanding of EMF-induced eye injuries. This work helped establish that microwave radiation poses risks to vision and eye health.
Unknown authors · 1972
Konryk R. Kucla · 1972
Unknown authors · 1972
Department of the Navy, Bureau of Medicine and Surgery · 1971
The instruction designates a BUMED Project Office for Biological Effects of Electromagnetic Radiation. The project covers the entire electromagnetic spectrum from cosmic rays to extremely low frequency, with primary interest in microwave and extremely low frequency areas. The mission is to provide the Chief of the Bureau of Medicine and Surgery and the Operating Forces of the Navy, and other Services and agencies when requested, with information and research data concerning the biological effects of electromagnetic radiation.
Unknown authors · 1971
Warren H. Donnelly, James M. McCullough · 1971
J. Damelin · 1971
The report explains that high-power VHF-UHF radiation can harm people and animals by overheating tissue. It defines radiation protection guide numbers of 10 and 1.0 milliwatts per square meter for different temperature-humidity indices. If the curves indicate a potential hazard, the actual antenna system must be analyzed with extensive near-field calculations.
Heering, van Osch · 1971
The report defines microwave radiation as electromagnetic radiation covering the range between conventional radio waves and far infrared. It explains that microwave absorption in tissues depends on water content and frequency, with fat allowing deeper penetration than muscle. The report classifies biological effects into thermal, specific thermal, and non-thermal categories and notes that harmful thermal effects usually occur at power densities exceeding 100 aW/on.
Mays L. Swicord · 1971
Stephen W. Smith, David G. Brown · 1971
J.A. Tanner, C. Romero-Sierra · 1971
André-Jean Berteaud et al. · 1971
This 1971 French study investigated whether pulsed and modulated UHF electromagnetic radiation could influence the development of Trypanosoma equiperdum infections in laboratory animals. The research examined the relationship between EMF exposure and parasitemia (parasite levels in blood), representing early work connecting electromagnetic fields to biological infection processes.
R. I. GRAY, C. E. GALLAHER · 1971
McLees BD, Finch ED · 1971
Stephen W. Smith, David G. Brown · 1971
This 1971 government study measured radiofrequency and microwave radiation levels from man-made sources throughout the Washington DC area. The research documented the electromagnetic environment in the nation's capital, providing baseline measurements of RF and microwave exposure from various transmission sources. This early work helped establish understanding of urban electromagnetic pollution levels during the dawn of the wireless age.
Harry Levine, Robert L. Moore · 1970
Unknown authors · 1970
Steven Galagan · 1970
Chamber length is determined by the antenna size and the highest test frequency. Chamber width must keep the angle of incidence at or below 60 degrees to maintain absorber performance. Tapered chambers can achieve better performance at lower frequencies and lower cost than rectangular chambers.
Laurent P. LaRoche, Milton M. Zaret, Albert F. Braun · 1970
