Why are electromagnetic deflection CRTs favored over electrostatic CRTs?

Electromagnetic deflection CRTs are favored primarily because they provide better electron beam control compared to their electrostatic counterparts. This improved control is due to the nature of magnetic fields, which can manipulate the electron beam with greater precision. In electromagnetic deflection systems, external magnetic coils create a magnetic field that influences the trajectory of the electron beam as it travels from the electron gun to the screen. This allows for more accurate deflection and positioning of the beam, resulting in better image quality and enhanced stability, especially in applications requiring precise display resolutions.

Furthermore, electromagnetic systems can achieve faster deflection speeds, which is particularly beneficial in high-refresh-rate displays and applications with dynamic content. The ability to affect the electron beam's path more finely and quickly makes electromagnetic deflection ideal for applications that require high performance and responsiveness.

Other factors like energy consumption, construction complexity, and weight, while they may have variations, do not significantly outweigh the benefits offered by the superior control provided by electromagnetic methods.