An American standard television picture is composed of about 488horizontal lines

Question

An American standard television picture is composed of about 488horizontal lines of varying light intensity. Assume that yourability to resolve the lines is limited only by the Rayleighcriterion and that the pupils of your eyes are 4.97 mm in diameter.Calculate the ratio of minimum viewing distance to the verticaldimension of the picture such that you will not be able to resolvethe lines. Assume that the average wavelength of the light comingfrom the screen is 575 nm.

I'm not sure what the question is asking for or what formula(s) Ineed to use.

Explanation / Answer

Diameter of the eye d = 4.97 * 10 ^ -3 m wavelength = 575 * 10 ^ -9 m the ratio of minimum viewing distance to the verticaldimension of the picture such that you will not be able to resolvethe lines = d / ( 1.22 )       = [ 4.97 * 10 ^ -3 m ] / [ 1.22* 575 * 10 ^ -9 m ]       = 7.0848 * 10 ^ 3

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