How Projection Television Works - Fully+illustrated unbiased tutorial describes how projection TVs form a small image on a device inside the projector + either a CRT or LCD + and then shine that image onto a large screen located elsewhere.
How Television Works - Easy to read article that describes how television works.
NTSC+TV - Tutorials on television basics, including broadcast engineering.
PAL NTSC Film Converter - Several reviews about the television standards of PAL and NTSC are represented. Especially the refresh rates are explained in detail. Run time conversions between different medium types are also discussed.
Pal Secam NTSC World Standards - Technical specifications of the world standards and list of countries and their adopted format. Additionally, a brief history of TV standards.
Tech+Notes - Technology reports and other matters of interest specific to the broadcasting engineer.
Television Production - TV production course covering the basics of lighting, audio, video and editing.
Video Measurement Tutorials from Tektronix - Helps to understand the nature of component video. Includes detailed descriptions of signal distortions and monitoring techniques.
Williamson+labs television - Graphics and formulas dominate this site which covers major aspects of video broadcast engineering.
+ Features numerous links to television and video technology sites. Organized by subject.