Assertion: cathode ray tube's electron beam | /r/CapableOf | sweep across the target
Facets:
value: periodically
type: TEMPORAL
Source sentences:
text: Finally, an electron beam periodically sweeps across the target, effectively scanning the stored image, discharging each granule, and producing an electronic signal like in the iconoscope.
text: Finally, an electron beam periodically sweeps across the target, effectively scanning the stored image and discharging each capacitor in turn such that the electrical output from each capacitor is proportional to the average intensity of the scene light between each discharge event (as in the iconoscope).