double-beam cathode-ray tube

double-beam cathode-ray tube

[¦dəb·əl ¦bēm ¦kāth‚ōd ′rā ‚tüb]
(electronics)
A cathode-ray tube having two beams and capable of producing two independent traces that may overlap; the beams may be produced by splitting the beam of one gun or by using two guns.