Question

Which contains the particles that are vibrating fastest

Answer 1

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I came across a paragraph that, as I interpreted, conveyed that:

1). The phase of a vibrating particle is the ratio of the displacement of the vibrating particle to its amplitude, at any instant.

2). It is the fraction of the time interval that has elapsed after the particle crossed the mean position of rest, whilst travelling in the positive Y direction (USING X and Y axis).

3). Refers to phase angle.

I have difficulty understanding and accepting points 1 and 2. I normally hear of phase dealing with the phase angle...the first two points are new to me. Could someone please explain them to me? I think point 2 has to do with the time period that the particle takes to vibrate simple harmonically.

Answer 2

Boiling water that are vibrating fastest