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High-performance liquid chromatography ( HPLC ), formerly referred to as high-pressure liquid chromatography, is a technique in analytical chemistry used to separate, identify, and quantify specific components in mixtures.
The current Billboard Hot 100 logo The Billboard Hot 100 is the music industry standard record chart in the United States for songs, published weekly by Billboard magazine. Chart rankings are based on sales (physical and digital), online streaming, and radio airplay in the U.S.[1] A new chart is compiled and released online to the public by ...
Auschwitz concentration camp (German: Konzentrationslager Auschwitz, pronounced [kɔntsɛntʁaˈtsi oːnsˌlaːɡɐ ˈʔaʊʃvɪts] ; also KL Auschwitz or KZ Auschwitz) was a complex of over 40 concentration and extermination camps operated by Nazi Germany in occupied Poland (in a portion annexed into Germany in 1939) during World War II and the Holocaust.
The Billboard 200 is a record chart ranking the 200 most popular music albums and EPs in the United States. It is published weekly by Billboard magazine to convey the popularity of an artist or groups of artists. Sometimes, a recording act is remembered for its "number ones" that outperformed all other albums during at least one week.. The chart grew from a weekly top 10 list in 1956 to become ...
M. von Ardenne's. A scanning electron microscope ( SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample.
An intelligence quotient ( IQ) is a total score derived from a set of standardised tests or subtests designed to assess human intelligence. [1] The abbreviation "IQ" was coined by the psychologist William Stern for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of Breslau he advocated in ...
MEDICIS. Produces isotopes for medical purposes. The Large Hadron Collider ( LHC) is the world's largest and highest-energy particle collider. [1] [2] It was built by the European Organization for Nuclear Research (CERN) between 1998 and 2008 in collaboration with over 10,000 scientists and hundreds of universities and laboratories across more ...
