colour tube meaning in Hindi

The final colour picture was created by combining the chrominance and luminance signals, but the technicians simply switched off the colour tubes whilst this dispute took place.
With such a camera, a sharp black and white picture was always assured, as it was not necessary to combine signals from the three colour tubes to provide the luminance detail.
Disadvantages of a four tube system were increased costs, a larger and heavier camera, and reduced light levels on the colour tubes ( light was stolen by the luminance tube ), making such a camera less suitable for outside broadcasts in low ambient lighting.

noun.