# what is EPOCH?

### Asked by svmic.dbr | 17th Oct, 2014, 12:42: PM

Expert Answer:

### Consider a particle executing simple harmonic motion along Y- axis. A simple harmonic oscillator oscillates about its mean position y = 0 to the maximum distance 'a' on both the sides which is known as the amplitude of simple harmonic oscillator.
The displacement at any instant t is given by y = a sin (ωt+φ_{0}). The argument of the sine function (ωt+φ_{0}) is called as the phase of the simple harmonic oscillator at time t and φ_{0 }is called the initial phase or epoch. ie. at t= o , φ = φ_{0 }and this φ_{0 }is called as the epoch. ie. the displacement of an oscillating body at zero time.

_{0}). The argument of the sine function (ωt+φ

_{0}) is called as the phase of the simple harmonic oscillator at time t and φ

_{0 }is called the initial phase or epoch. ie. at t= o , φ = φ

_{0 }and this φ

_{0 }is called as the epoch. ie. the displacement of an oscillating body at zero time.

### Answered by Jyothi Nair | 19th Oct, 2014, 11:20: AM

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