What is a frequency?

A frequency means the number of times of vibrating in 1 second.

One vibration expresses from a mountain to a mountain or from a valley to a valley.
?For example,5Hz in 1 second =from a mountain to a mountain comes 5 times.

Hz expresses the unit of frequency.

Relation between household appliances and frequency

Electricity from an electric socket is concerned with frequency.

The direction of an electric current flows changes every second.

For example,frequency of East Japan is 50Hz,that of Western Japan is 60Hz.

In short,the direction changes 50(60) times in 1 second.
These difference may cause strength of light or engine speed of a motor.


The truth of frequence

 To tell the truth,frequence causes engine speed of motor.