This activity introduces two different representations of spectra: the photographic representation, such as the rainbow, and the graphical representation used more often by astronomers. A rainbow is often given as an...

Hosted by the National Institute of Standards and Technology (NIST), this article by W. Martin and W. Wiese introduces the basics of atomic structure and spectra. With regard to structure, there is an emphasis on...

This resource, part of the Spectroscopy Lab Suite, simulates optical transitions in a pumped infrared detector. In this simulated experiment, impurity states are initially populated with visible light. Infrared radiation...

The European Laboratory for Non Linear Spectroscopy (LENS) offers an introduction to its goal "to provide advanced laser and spectroscopic facilities for researchers from European countries and to promote and facilitate...

This site from the Exploratorium provides information on telescopes and observatories such as the Hubble Space Telescope that are being used to study spectra from space. Gamma-ray, x-ray, ultraviolet, and infrared...