THE multipole lines from atomic sulphur are of considerable astrophysical interest. Moreover, a direct measurement of their wavelength is the best and most direct method of fixing the positions of the ...

Variability must be avoided for OEM instrument developers who must guarantee an answer based on the quality of a Raman spectrum. These answers are important to their customers and those influenced by ...

Researchers at the National Institute of Standards and Technology (NIST) have developed two new calibration tools to help correct and validate the performance of analytic instruments that identify ...