nuclear quadrupole resonance spectroscopy
21Hyperfine structure — In atomic physics, hyperfine coupling is the weak magnetic interaction between electrons and nuclei. Hyperfine coupling causes the hyperfine splitting of atomic or molecular energy levels. The totality of energy levels spawned by hyperfine… …
22isotope — isotopic /uy seuh top ik/, adj. isotopically, adv. /uy seuh tohp /, n. Chem. any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in… …
23Residual dipolar coupling — The residual dipolar coupling between two spins in a molecule occurs if the molecules in solution exhibit a partial alignment leading to an incomplete averaging of spatially anisotropic dipolar couplings.Partial molecular alignment leads to an… …
24Hughes–Drever experiment — Hughes–Drever experiments (also clock comparison , clock anisotropy , mass isotropy , or energy isotropy experiments) are testing the isotropy of mass and space. As in Michelson–Morley experiments, the existence of a preferred frame of reference …
25Elliott Cresson Medal — given to Emile Berliner in 1913 Presented by Franklin Institute Country US …
26Massenspektrometrie — Als Massenspektrometrie werden Verfahren zum Messen der Masse von Atomen oder Molekülen bezeichnet. Die Massenspektrometrie zählt nicht zu den Methoden der Spektroskopie, da es nicht um Spektren von elektromagnetischer Strahlung geht. Die zu… …
27organosulfur compound — ▪ chemical compound Introduction also spelled organosulphur compound , also called organic sulfur compound a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties. They are… …
28Columbia School of Engineering and Applied Science — School of Engineering and Applied Science redirects here. For other uses, see School of Engineering and Applied Science (disambiguation). Fu Foundation School of Engineering and Applied Science Established …
29Melamine — This article is about the chemical compound. For the plastic also called melamine , see melamine resin. Melamine …
307440-63-3 — Xénon Pour les articles homonymes, voir Xenon. Xénon …
