What Lies Ahead on AMC. It received 7.3 million viewers and attained a 4.8HH rating, breaking the record for the most-watched drama in the history of cable television. It received the second highest viewership of the week ending October 16, scoring higher than "Jersey Shore" but less than a 2011 NFL season game between the Detroit Lions and the Chicago Bears. "What Lies Ahead" achieved similar feats, attaining a 3.8 rating—translating to 4.8 million viewers—in the 18-49 demographic, according to Nielsen ratings. In the 25–54 demographic, it garnered 4.2 million viewers. Total viewership after two encore presentations was 11 million viewers, an increase
F-number of the f-number). He calls the f-number the "ratio number," "aperture ratio number," and "ratio aperture." He calls expressions like 8 the "fractional diameter" of the aperture, even though it is literally equal to the "absolute diameter" which he distinguishes as a different term. He also sometimes uses expressions like "an aperture of f 8" without the division indicated by the slash. Beck and Andrews in 1902 talk about the Royal Photographic Society standard of 4, 5.6, 8, 11.3, etc. The R.P.S. had changed their name and moved off of the U.S. system some time between 1895 and 1902. By