2. I couldn't find a clear name for this one, at least one reference claimed it to be rhodopsin -- while others said that it was a different blue-green pigment.

3. W. Ruston, Visual Pigments and Color Blindness, Scientific American, March 1975, pp. 64-74

4. K. Benson and D. Fink, HDTV, Multiscience Press, 1991, pg. 3.12, Figure 3.4

5. K. Benson and D. Fink, HDTV, Multiscience Press, 1991, pg. 3.12, Figure 3.5

6. B. Grob, Basic Color Television Principles and Servicing, McGraw Hill, 1975, pg. 53

7 B. Grob, Basic Color Television Principles and Servicing, McGraw Hill, 1975, pg. 55

8. K. Benson and D. Fink, HDTV, Multiscience Press, 1991, pg. 3.6 claims 330 pixels. Notice that if the full 6 MHz is claimed, and if one wavelength is assumed to only cover one pixel, then you get approximately 320 pixels. However, only about 3.2 MHz is really used -- but the usual assumption is 2 pixels per wavelength.

9 B. Grob, Basic Color Television Principles and Servicing, McGraw Hill, 1975, pg. 68.

10 D.H. Pritchard, US Color Television Fundamentals, IEEE Trans. Consum. Electron. Vol. CE-23, pp. 467-78, Figure 15, 1977.

11 B. Grob, Basic Color Television Principles and Servicing, McGraw Hill, 1975, pg. 70.

12 D.H. Pritchard, US Color Television Fundamentals, IEEE Trans. Consum. Electron. Vol. CE-23, pp. 467-78, Figure 21, 1977.

13 B. Grob, Basic Color Television Principles and Servicing, McGraw Hill, 1975, pg. 156

14 B. Grob, Basic Color Television Principles and Servicing, McGraw Hill, 1975, pg. 155.

15 D.H. Pritchard, US Color Television Fundamentals, IEEE Trans. Consum. Electron. Vol. CE-23, pp. 467-78, Figure 17, 1977.

16 D.H. Pritchard, US Color Television Fundamentals, IEEE Trans. Consum. Electron. Vol. CE-23, pp. 467-78, Figure 16, 1977.

17 B. Grob, Basic Color Television Principles and Servicing, McGraw Hill, 1975, pg. 156

18 D.H. Pritchard, US Color Television Fundamentals, IEEE Trans. Consum. Electron. Vol. CE-23, pp. 467-78, Figure 16, 1977.

19 B. Grob, Basic Color Television Principles and Servicing, McGraw Hill, 1975, pg. 379.

20 D. Fink, Electronic Engineers Handbook, McGraw Hill, 1975, page 20-59

21 D. Fink, Electronic Engineers Handbook, McGraw Hill, 1975, page 20-59

22 B. Grob, Basic Color Television Principles and Servicing, McGraw Hill, 1975, pg. 160

23. K. Benson and D. Fink, HDTV, Multiscience Press, 1991, pg. 3.12, Figure 3.5

24. K. Benson and D. Fink, HDTV, Multiscience Press, 1991, from Table 3.1 page 3.6, corrected for NTSC horizontal resolution. Other number assumed correct.

25. K. Benson and D. Fink, HDTV, Multiscience Press, 1991, pg. 3.12, Figure 3.5

26. D. Pritchard and J. Gibson, Worldwide color TV standards, J. Soc. Mot. Pict. TV. Eng. Vol. 89, pp. 111-120, Feb. 1980.

27. D. Pritchard and J. Gibson, Worldwide color TV standards, J. Soc. Mot. Pict. TV. Eng. Vol. 89, pp. 111-120, Figure 10, Feb. 1980.

28. D. Pritchard and J. Gibson, Worldwide color TV standards, J. Soc. Mot. Pict. TV. Eng. Vol. 89, pp. 111-120, Figure 15, Feb. 1980.