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.
The incubation period ranges from 3 to 21 days, usually about 10 days. In general, the further the injury site is from the central nervous system, the longer the incubation period.A shorter incubation period is associated with more severe disease, complications, and a higher chance of death.In neonatal tetanus, symptoms usually appear from 4 to 14 days after birth, averaging about 7 days.he incubation period is short, usually 1â2 days. Unlike generalized and localized tetanus, cephalic tetanus results in flaccid cranial nerve palsies rather than spasm. Spasm of the jaw muscles may also be present.