What is Absorption Spectroscopy?

Feb 26, 2017 | Glossary of Spectroscopy Terms

The principle of absorption spectroscopy is to measure how much light is absorbed by the sample. As seen in the absorbance entry, this can be accomplished by measuring the intensity of the light before and after the sample. The Beer-Lambert law describes how the...

What is a cuvette?

Feb 26, 2017 | Glossary of Spectroscopy Terms, Sampling

A cuvette is a type of sample holder for liquid samples. Often, they are made of plastic, borosilicate glass, or quartz. StellarNet offers glass cuvettes for experiments in the visible or NIR ranges and quartz cuvettes for experiments in the UV range. Cuvettes also...

Photonics West 2017 Video Updates

Feb 15, 2017 | News

StellarNet Makes a Splash! StellarNet recently unveiled its latest innovations at the industry’s leading photonics conference, Photonics West, where there were more than 1,200 companies and 20,000+ attendees. It was great to see so many familiar faces and happy...

What is a Light-Emitting Diodes (LEDs)?

Feb 14, 2017 | Glossary of Spectroscopy Terms, Light Source

LEDs are semi-conductors that are used to emit radiation. In this instance, semi-conductors behave much like atoms and molecules do. They have energy levels and radiation is emitted when electrons fall from a higher level to a lower level. The difference is that an...

What is a Lamp?

Feb 14, 2017 | Glossary of Spectroscopy Terms, Light Source

Lamps are light sources that provide radiation mainly through spontaneous emission. This means that the radiation is emitted in all directions and is not coherent. Many lamps tend to emit many wavelengths, but the radiation is hard to collimate into a beam. For many...