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4 giorni fa · TOPICS. Algebra Applied Mathematics Calculus and Analysis Discrete Mathematics Foundations of Mathematics Geometry History and Terminology Number Theory Probability and Statistics Recreational Mathematics Topology Alphabetical Index New in MathWorld
3 giorni fa · Geologic time scale. The geologic time scale, proportionally represented as a log-spiral with some major events in Earth's history. A megaannus (Ma) represents one million (10 6) years. The geologic time scale or geological time scale ( GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating ...
3 giorni fa · Alpha Centauri ( α Centauri, α Cen, or Alpha Cen) is a triple star system in the southern constellation of Centaurus. It consists of three stars: Rigil Kentaurus ( α Centauri A ), Toliman ( α Centauri B ), and Proxima Centauri ( α Centauri C ). [14] Proxima Centauri is the closest star to the Sun at 4.2465 light-years (1.3020 pc ).
2 giorni fa · The solar system is part of the " observable universe ," the region of space that humans can actually or theoretically observe with the aid of technology. Unlike the observable universe, the universe is possibly infinite. The Sun, Moon, and brightest planets were visible to the naked eyes of ancient astronomers, and their observations and ...
5 giorni fa · The solvent delivery system features quaternary blending with a fixed delay volume for consistent and predictable results, regardless of system back pressure. Flexible injection capabilities cover a wide injection volume range (up to 2 mL) with excellent carryover performance, typically below 0.005%. zoom.
4 giorni fa · Coleoidea. Paracoleoidea † (disputed) A cephalopod / ˈsɛfələpɒd / is any member of the molluscan class Cephalopoda / sɛfəˈlɒpədə / ( Greek plural κεφαλόποδες, kephalópodes; "head-feet") [3] such as a squid, octopus, cuttlefish, or nautilus.
4 giorni fa · High-performance liquid chromatography or commonly known as HPLC, is an analytical technique used to separate, identify or quantify each component in a mixture. The mixture is separated using the basic principle of column chromatography and then identified and quantified by spectroscopy.
