and described by the formula: where A is the amplitude of oscillation, f is the frequency, t is the elapsed time, and is the phase of the oscillation. The phase determines or is determined by the initial displacement at time t = 0. A motion with frequency f has period. Two potential ambiguities can be noted:
Incubation Period Shingles is not transmitted from exposure to another infected person so there is no applicable incubation period. Anyone who has recovered from varicella may develop shingles. Mode of Transmission Transmission of the virus occurs through direct contact with the rash or fluid from the lesions.
1 The incubation period of Salmonella gastroenteritis is 6-72 hours. 2  In most cases, children have cramping abdominal pain, nausea, vomiting, and loose watery stools.3  Stools may be bloody; however, this is not as common as in infection with Shigella.nteric fever (typhoid fever). 1  Enteric fever is caused by S. typhi and several other Salmonella serotypes. 2  The incubation period for enteric fever is 3-60 days, but symptoms typically occur in 1-2 weeks. 3  Patients may present with high fever, which rises in a steplike fashion.