1 Colitis is inflammation of the inner lining of the colon. 2  It may cause abdominal pain and diarrhea with or without blood. 3  Fever may be present. 4  There are numerous causes of colitis including infection, inflammatory bowel disease, ischemic, and microscopic colitis.olitis facts. 1  Colitis is inflammation of the inner lining of the colon. 2  It may cause abdominal pain and diarrhea with or without blood. 3  Fever may be present.
Definition of resonant frequency. : a frequency capable of exciting a resonance maximum in a given body or system.
Fundamental and Harmonics. The lowest resonant frequency of a vibrating object is called its fundamental frequency. Most vibrating objects have more than one resonant frequency and those used in musical instruments typically vibrate at harmonics of the fundamental.A harmonic is defined as an integer (whole number) multiple of the fundamental frequency.Vibrating strings, open cylindrical air columns, and conical air columns will vibrate at all harmonics of the fundamental. Cylinders with one end closed will vibrate with only odd harmonics of the fundamental.undamental and Harmonics. The lowest resonant frequency of a vibrating object is called its fundamental frequency. Most vibrating objects have more than one resonant frequency and those used in musical instruments typically vibrate at harmonics of the fundamental.