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.
Definition of Natural Frequency. The natural frequency is the rate at which an object vibrates when it is not disturbed by an outside force. Each degree of freedom of an object has its own natural frequency, expressed as Ï n (omega subscript n). Frequency (omega) is equal to the speed of vibration divided by the wavelength (lambda), . Other equations to calculate the natural frequency depend upon the vibration system. Natural frequency can be either undamped or damped, depending on whether the system has significant damping.