May 21, 2020 | Application, News, SpectroRadiometry, Spectroscopy
Anyone who knows me knows I’m not a morning person. I recently woke up late in the night with my mind momentarily tricked into thinking it was morning by the light creeping in between my drapes. This happens on many-a-night, but this time I had an “a ha!” moment....
May 25, 2017 | Glossary of Spectroscopy Terms, Spectroscopy
The signal to noise ratio, often abbreviated S/N, is exactly what it sounds like; it’s the ratio of the magnitude of the signal to the magnitude of the noise. Experiments need a large S/N to be able to distinguish features in the signal from the noise. If the S/N is...
May 25, 2017 | Glossary of Spectroscopy Terms, Spectroscopy, StellarNet Definition
The dark spectrum of a spectrometer is a spectrum taken with no light hitting the detector. It captures the shape of the baseline offset. It can be used to adjust sample spectra for non-uniformities in the detector pixels. The SpectraWiz software is able to do this...
Mar 19, 2017 | Glossary of Spectroscopy Terms, Spectroscopy
What is a Spectrograph? A spectrograph is an optical device that separates light into its individual wavelengths, allowing the spectral content of a light source or sample to be analyzed. It is a key component of a spectrometer and is responsible for dispersing...
Feb 26, 2017 | Glossary of Spectroscopy Terms, Spectroscopy, StellarNet Definition
What is Raman Spectroscopy? Raman spectroscopy is a non-destructive analytical technique used to identify materials and characterize their molecular structure. It works by measuring the small changes in wavelength that occur when laser light interacts with a sample....
Feb 14, 2017 | Glossary of Spectroscopy Terms, Spectroscopy
A light source emits electromagnetic radiation. Some sources you encounter everyday are the sun, light bulbs, and microwaves. The light sources that StellarNet offers fall into three categories: lasers, lamps, and LEDs.