#021: Physical Basis of Electromagnetic Interactions with Biological Systems.

A workshop sponsored by the Office of Naval Research, the Naval Medical Research and Development Command, and the Bureau of Radiological Health, Food and Drug Administration was held at the University of Maryland in 1977.  The Proceedings of that workshop are available here as a pdf document.

Taylor, L.S. and A.Y. Cheung (editors).  The Physical Basis of Electromagnetic Interactions with Biological Systems.  Proceedings of a workshop held at the University of Maryland, College Park, Maryland, June 15-17, 1977.  410 pp.


This volume contains the proceedings of a Workshop on the Physical Basis of Electromagnetic Interactions with Biological Systems held at the University of Maryland on June 15-17, 1977. The workshop was sponsored by the Office of Naval Research, the Naval Medical Research and Development Command and the Bureau of Radiological Health, Food and Drug Administration.

The wide application of industrial, commercial and military devices and systems which radiate frequencies in the radiofrequency and microwave portion of the electromagnetic spectrum plus numerous only partially understood indications of microwave effects upon living organisms have raised important questions of the physical basis of the interactions of electromagnetic fields with biological systems. These questions must be answered if the development of regulatory standards and of methods and techniques for controlling radiofrequency and microwave exposure is to be achieved. The same questions must be answered in connection with present and proposed therapeutic applications of these waves. The rapid increase in the use of these frequencies makes these questions matters of imperative concern, particularly in view of the possibilities of cumulative or delayed effects of exposure.

The study of electromagnetic interactions with biological systems brings together diverse specialties in the fields of physics, engineering, biology and chemistry in a highly interdependent way. Progress towards practical solutions of the problems involved will depend upon the development of experimental techniques and instruments and of a sufficient general theoretical base to inform and react with the experimental investigations. The purpose of the Workshop on the Physical Basis of Electromagnetic Interactions with Biological Systems was to bring together the leading investigators in the field to present the results of recent research, to determine the present status of the field and the priority of significant problem areas, and to critically evaluate conflicting theoretical interpretations and experimental techniques. These proceedings contain the formal papers prepared by the invited speakers plus a number of contributed papers given by other participants in the Workshop. Transcriptions were made of the discussion periods following each paper and edited versions of these are included; the editors bear the responsibility for any misquotation.

Table of Contents

1. Survey of Microwave and Radiofrequency Biological Effects and Mechanisms. S. Cleary.

2. Molecular Absorption of Non-Ionizing Radiation in Biological Systems. K. D. Straub.

3. Millimeter Wave and Far-Infrared Absorption in Biological Systems. K. Illinger.

4 Cooperative Quantum Mechanical Mechanisms for Resonance Absorption of Non-Ionizing Radiation. I. Grodsky.

5. Basics of ELF Fields and Biosphere Effects. O. Schmitt.

6. Possible Mechanisms of Weak Electromagnetic Field Coupling in Brain Tissue. s. M. Bawin, A. Sheppard and W. R. Adey.

7. Classical Theory of Microwave Interactions with Biological Systems. H. Schwan.

8. Determination of Bound Water in Biological Materials from Dielectric Measurements. E. Grant.

9. Interfacial and Intracellular Water: Expected Anomalies in Dielectric Properties. J. S. Clegg and W. Drost-Hansen.

10. Microwave Frequencies and the Structure of the Double Helix. E. Prohofsky.

11. Techniques of Raman Spectroscopy Applied to Study the Effects of Microwaves upon Synthetic and Naturally Occurring Lipid Membranes. J. P. Sheridan, R. Priest, P. Schoen, and J. M. Schnur.

12. Evanescent Waves and Waves in Absorbing Media. L. Felsen.

13. Microwave and RF Dosimetry. c. K. Chou and A. w. Guy.

14. Electric Field Measurements Within Biological Media. A. Cheung.

15. Some Recent Results on Deposition of Electromagnetic Energy in Animals and Models of Man. o. P. Gandhi and M. J. Hagmann.

16. Thermometry in Strong Electromagnetic Fields. T. c. Cetas.

17. Non-Perturbing Microprobes for Measurements in Electromagnetic Fields. A. Deficis and A. Priou.

18. The Viscometric Thermometer. c. A. Cain, M. M. Chen, K. L. Lam and J. Mullin.

19. Microwave Thermography: Physical Principles and Diagnostic Applications. P. C. Myers and A. H. Barrett.

20. Design and Standardization of Exposure Systems for RF and Microwave Experimentation. M. L. Swicord and H. S. Ho.

21. Calibration Techniques for Microwave and RF Exposure Measurement Devices. H. I. Bassen.

22. Workshop Summary: S. Cleary.

23. Panel Discussion – Principal Speakers and Participants.

24. Workshop Attendees.