Positron Annihilation Lifetime Spectrometer | NIST
The National Institute of Standards and Technology (NIST) has developed a table-top positron annihilation lifetime spectrometer for analyzing…
SI Length and Traceability | NIST
The article discusses NIST’s efforts to maintain and develop methods for traceability to the meter using laser frequency/wavelength…
Journal of Research Volume 51 | NIST
The Journal of Research published by NIST covers a wide range of scientific and technical topics, including: 1. Metrology and related…
Ampere: The Present | NIST
The ampere, a fundamental unit of electric current, has faced challenges in precise measurement. However, Ohm’s law, which relates…
Methane Symmetry Operations – Coupling of J and LS | NIST
This article discusses the coupling of angular momentum in spherical top molecules with excited triply degenerate vibrations. The authors…
Most Accurate Molecular Quantum Computations to Date Performed – January 2006 | NIST
Quantum Computing Breakthrough: NIST and Indiana University Achieve Record Accuracy in Molecular Calculations Researchers at NIST and Indiana…
Journal of Research Volume 63B | NIST
This issue of the Journal of Research of the National Bureau of Standards contains papers on various topics in mathematics and engineering.…
Quantum Physics Theory | NIST
The article discusses various theoretical and experimental studies related to quantum physics and fundamental constants, conducted at the…
Diatomic Spectral Database, 3Σ-Ground State Molecules | NIST
The article discusses the rotational spectra of diatomic molecules with a 3Σ electronic ground state, focusing on their energy levels and…