Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
VDT's Pass Medical Tests
Bill Rados
Early VDT safety testing focused on preventing immediate heating damage, not the biological effects modern research reveals.
Plain English Summary
This study examined video display terminals (VDTs) for various types of radiation emissions including X-rays, radiofrequency, microwave, and ultrasound. The research found that VDTs passed medical safety tests, indicating radiation levels were within acceptable limits. This work contributed to early workplace safety standards for computer monitors.
Why This Matters
The reality is that early VDT safety research like this helped establish the foundation for workplace electromagnetic exposure standards we still use today. While these studies found emissions within 'acceptable' limits, it's worth noting that safety standards from this era were primarily designed to prevent immediate heating effects, not the subtle biological impacts we're discovering today. What this means for you is that modern devices often emit similar or higher levels of EMF than these early terminals that 'passed' safety tests. The science demonstrates that passing basic radiation safety tests doesn't necessarily mean a device is biologically inert - it simply means it won't cause obvious thermal damage.
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. X-ray leakage from VDTs can be controlled by proper circuit design and the use of shielding in or around the cathode ray tube.
Show BibTeX
@article{vdt_s_pass_medical_tests_g4215,
author = {Bill Rados},
title = {VDT's Pass Medical Tests},
year = {n.d.},
}