The "Don't sit too close to the TV" phrase had more to do with the worry that focusing young eyes on a close image for extended periods of time might harm there development. Also not blocking the screen for other people.
The article's use of radioactive to describe a type of TV is not accurate, there was no radiation when the set was off. There was a problem with a tube and circuit used to regulate the HV. The tubes were redesigned to fix the problem. In all cases the X-rays were emitted pointed down from the bottom or out one of the sides, depending how the regulator tube was mounted.
|