اللغه الانجليزيه

Oscillatory motion
Vibrational motion:

* The motion done by the vibrating body at both sides of its rest point (original position) where it repeats itself at equal time intervals.

* Application of vibrational motion the micro-wave to cook the food.

Amplitude:

* The maximum displacement reached by the vibrating body far from its original position.

The complete Oscillation (cycle):

The motion done by the vibrating body when it passes at a certain point in its path two successive times in the same direction.

Note:

The complete vibration contain four amplitudes.

The Periodic time:

* The time taken by the vibrating body to make a complete vibration.

Frequency:

The number of complete vibrations done by the vibrating body in one second.

Frequency is measured by unit called Hertz (HZ) or multiplications of Hertz.

1- Kilo Hertz = 1000 Hertz or (103) HZ

2- Mega Hertz = 1000,000 HZ or (106) HZ

3- Giga Hertz = 1000,000,000 HZ or (109) HZ