Final answer:
Interlaced scans were adopted to reduce screen flickering, to address bandwidth limitations, and to increase frame rates for a better viewing experience without overhauling broadcasting technology.
Step-by-step explanation:
The inclusion of interlaced scans in television technology was driven by a few pivotal factors. One significant reason was to reduce flickering on the television screen, which can cause discomfort to viewers. By flashing two half-images rapidly one after another, interlaced scanning mimics a full image with less bandwidth, helping to alleviate this issue.
Another key factor was the limitation of bandwidth. Interlaced scanning allowed for a smoother picture at a lower bandwidth compared to a progressive scan, which transmits every line in sequence. This was particularly important in the early days of television when transmission capabilities were limited.
Finally, the desire to create a higher frame rate for a more life-like representation on screens played a role. Interlaced scanning effectively doubles the frame rate without requiring double the bandwidth. This innovation was crucial in improving the viewing experience without needing significant changes in broadcasting infrastructure.