Explore Imaging, Optics, and Illumination Strategies at the Vision Spectra Conference (July 16-18)
Search
Menu
PI Physik Instrumente - 50 ways hexapod ROS LB 7/24
Photonics Dictionary

absorption band

An absorption band is a range of wavelengths, frequencies, or energies in the electromagnetic spectrum within which a substance absorbs radiation. It appears as a dark band in a spectrum where the intensity of the absorbed wavelengths is significantly lower than that of adjacent wavelengths. These bands are characteristic of specific molecular or atomic transitions and are used to identify substances and understand their properties.

Molecular transitions: They result from electronic, vibrational, or rotational transitions within molecules. Each type of transition corresponds to a specific energy change and thus a specific range of wavelengths.

Spectroscopy: In spectroscopic analysis, absorption bands are crucial for identifying and studying substances. By examining the absorption bands, scientists can determine the composition, structure, and physical properties of a material.

Unique fingerprints: Each substance has unique absorption bands, which can serve as fingerprints for identification. For example, water has characteristic absorption bands in the infrared region due to its molecular vibrations.

Applications: Absorption bands are used in various fields such as chemistry, physics, astronomy, and environmental science to analyze gases, liquids, solids, and plasmas.

In essence, an absorption band is a signature feature in a spectrum indicating the specific wavelengths at which a substance absorbs electromagnetic radiation.
 

Explore Our Content
News
Features
Latest Products
Webinars
White Papers
All Things Photonics Podcast
Videos
Our Summits & Conferences
Industry Events
Bookstore
Join Our Community
Subscribe
Advertise
Become a member
Sign in
Contribute a Feature
Suggest a Webinar
Submit a Press Release
Mobile Apps

About Us
Our Company
Our Publications
Contact Us
Career Opportunities
Teddi C. Laurin Scholarship

Terms & Conditions
Privacy Policy
California Consumer Privacy Act (CCPA)



©2024 Photonics Media
100 West St.
Pittsfield, MA, 01201 USA
[email protected]
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.