PHASE ALTERNATE LINE (PAL)
\fˈe͡ɪz ɔːltˈɜːnət lˈa͡ɪn pˈal], \fˈeɪz ɔːltˈɜːnət lˈaɪn pˈal], \f_ˈeɪ_z ɔː_l_t_ˈɜː_n_ə_t l_ˈaɪ_n__ p_ˈa_l]\
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The standardized picture format used for decoding and encoding television signals, throughout most of Europe, excluding France. The specifications of the PAL format are as follows: 786 pixels in each line, a total of 625 lines on each screen, 25fps video, and a power rating of 220V. The image quality of a PAL tv is better than that of a NTSC, but inferior to SECAM, used in France.
By Henry Campbell Black
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.