Inelastic light scattering on a sample is measured by Raman spectroscopy. The Raman spectrum is unique to each IR-active substance, and thus, allows for clear identification of the substance of ...

Greg DePersio has 13+ years of professional experience in sales and SEO and 3+ years as a writer and editor. Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of ...

As a new research paper spurs debate, the countdown is ticking on a pandemic-era policy change that may affect one of healthcare marketing’s most controversial tactics. Pharma companies give away ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Representative sampling and random sampling ...