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VDT's Pass Medical Tests

No Effects Found

Bill Rados · 1980

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1980 research found early computer monitors passed basic radiation safety tests, establishing precedent for workplace EMF evaluation.

Plain English Summary

Summary written for general audiences

This 1980 study by Bill Rados examined video display terminals (VDTs) for radiation emissions and health effects, finding they passed medical safety tests. The research focused on occupational safety concerns about early computer monitors, particularly x-ray leakage and other forms of radiation exposure in workplace settings.

Study Details

To test video display terminals (VDTs) for potential health hazards including radiation leakage and to determine if VDTs emit harmful levels of radiation under normal operating conditions.

FDA testing was conducted at the Winchester Engineering and Analytical Center in Winchester, Mass. O...

Radiofrequency and microwave emissions were detected from some electronic components and circuits in...

The results of FDA's radiation testing generally agreed with those of earlier studies done by NIOSH and other organizations. The consensus of the studies is that VDTs emit little or no harmful radiation under normal operating conditions; the emissions that are detectable are well below any existing national and international standards. Compared to some other common sources of radiation, VDTs present a much lower risk. Fluorescent lamps emit more visible and ultraviolet light, and space heaters give off more infrared radiation with no known ill effects. VDTs normally emit less x-radiation than TV sets.

Cite This Study
Bill Rados (1980). VDT's Pass Medical Tests.
Show BibTeX
@article{vdt_s_pass_medical_tests_g6171,
  author = {Bill Rados},
  title = {VDT's Pass Medical Tests},
  year = {1980},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

The testing focused on x-ray leakage and other radiation emissions from video display terminals. Early computer monitors used cathode ray tube technology that could potentially produce ionizing radiation, making x-ray screening a primary safety concern for occupational health.
VDTs were new workplace technology in 1980, and workers were spending extended hours in front of these devices. Federal agencies like FDA and NIOSH needed to establish safety standards for occupational EMF exposure from computer displays.
Early VDTs used cathode ray tube technology that produced different radiation patterns than modern LCD or LED displays. While 1980 monitors passed basic x-ray safety tests, today's screens emit primarily radiofrequency and extremely low frequency EMF.
This research contributed to establishing federal guidelines for computer display radiation limits in workplace settings. The FDA and NIOSH used such studies to develop occupational safety standards for electronic equipment that workers used daily.
The study focused on immediate radiation safety compliance rather than long-term health impacts. Early EMF research primarily examined acute effects and basic safety thresholds, not the chronic exposure patterns we study today.