spectrum modulus
51Rubidium — krypton ← rubidium → strontium K ↑ Rb ↓ …
52Cone penetration test — A CPT truck operated by the USGS. The cone penetration test (CPT) is an in situ testing method used to determine the geotechnical engineering properties of soils and delineating soil stratigraphy. It was initially developed in the 1950s at the… …
53Titanium nitride — (titaniumnitrogen) (sometimes known as Tinite or TiNite) is an extremely hard ceramic material, often used as a coating on titanium alloy, steel, carbide, and aluminium components to improve the substrate s surface properties. Applied as a thin… …
54Insect wing — Original veins and wing posture of a dragonfly. Hoverflies hovering to mate …
55Park–Miller random number generator — The Park–Miller random number generator (or the Lehmer random number generator) is a variant of linear congruential generator that operates in multiplicative group of integers modulo n. A general formula of a random generator (RNG) of this type… …
56Numerical sign problem — The numerical sign problem refers to the difficulty of numerically evaluating the integral of a highly oscillatory function of a large number of variables. Numerical methods fail because of the near cancellation of the positive and negative… …
57Grateful Dead — This article is about the band. For the folktale, see Grateful dead (folklore). Grateful Dead Grateful Dead members backstage during the early 1980s (l r): Brent Mydland, Bob Weir, Jerry Garcia, Bill Kreutzmann. Phil Lesh and Mickey Hart are not… …
58Neon — This article is about the noble gas. For other uses, see Neon (disambiguation). fluorine ← neon → sodium …
59Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …
60Andromeda Galaxy — The Andromeda Galax …
