“This did not necessarily mean that teachers disliked such a child or were unsympathetic to his or her needs, but simply that such a child was an interference to the progress of the rest of the class.”
“As a practical matter, all broadcast communication requires some public regulation to limit signal interference that could frustrate all such activity.”
Radio interference caused by pulses of electromagnetic radiation in the atmosphere as the result of lightning and other events (both natural and man-made)
