- Acoustics: A defined portion of either the audio or radio frequency spectrums. A specific part of the frequency spectrum such as AM, FM, VHF, UHF, etc. Source: Church Audio & Acoustics Glossary
- Chemistry: A series of very closely spaced, nearly continuous molecular orbitals that belong to the crystal as a whole.
Sponsor: Save 70% or more on Daily Disposable contacts at 1-800-GET-LENS