(between frequencies)
51Human genetic variation — is the natural variation in gene frequencies observed between the genomes of individuals or groups of humans. Variation can be measured at both the individual level (differences between individual people) and at the population level, i.e.… …
52plasma — plasmatic /plaz mat ik/, plasmic, adj. /plaz meuh/, n. 1. Anat., Physiol. the liquid part of blood or lymph, as distinguished from the suspended elements. 2. Cell Biol. cytoplasm. 3. whey. 4. a green, faintly translucent chalcedony. 5. Physics. a …
53Comparison of analog and digital recording — This article compares the two ways in which sound is recorded and stored. Actual sound waves consist of continuous variations in air pressure. Representations of these signals can be recorded using either digital or analog techniques. An analog… …
54Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …
55Nuclear magnetic resonance — This article is about the physical phenomenon. For its use as a method in spectroscopy, see Nuclear magnetic resonance spectroscopy. NMR redirects here. For other uses, see NMR (disambiguation). First 1 GHz NMR Spectrometer (1000 MHz,… …
56Tide — This article is about tides in the Earth s oceans. For other uses, see Tide (disambiguation). Tidal redirects here. For other uses, see Tidal (disambiguation). High Tide redirects here. For other uses, see High Tide (disambiguation) …
57Alternating current — (green curve). The horizontal axis measures time; the vertical, current or voltage. In alternating current (AC, also ac) the movement of electric charge periodically reverses direction. In direct current (DC, also dc), the flow of electric charge …
58Race and genetics — Notions of race based on Human genetic variation have replaced historical approaches such as craniology with the advent of human genetics in the 20th century. Early historyBlood groupsPrior to the discovery of DNA as the hereditary material,… …
59HLA-DQ8 — (MHC Class II, DQ cell surface antigen) Rendering of HLA DQ8 with immundoinant insulin peptide in the binding pocket. Cis haplotype Haplotype …
60British Caledonian in the 1980s — Articleissues cleanup= March 2008 copyedit = March 2008 confusing = March 2008 expert = Airlines essay = March 2008 peacock = March 2008 tone = March 2008 wikify = March 2008 context = March 2008 introrewrite = March 2008There were many ups and… …
