# Frequency

Definition
 The frequency of a vibration is the number of cycles in one second.Frequency is a measure of the number of occurrences of a repeating event per unit time, also called a temporal frequency.

# Relationship to the Period

The frequency is related to the period by:

$f = \frac{1}{T}$

## Units

1/s or Hertz, Hz

Very useful formaula, good use of units and easy to access. crav005

## FYI

Here's a link thats like an online interactive textbook. Will answer any questions you might have..: http://www.glenbrook.k12.il.us/gbssci/phys/Class/waves/wavestoc.html (dhic014)

## Wave frequency outline and quiz

For an introduction to the simple concepts of frequency and period of waves, see this resource from Illinois. There is also a quiz with '90s style buttons which show you the answers. Internet is great, huh? Woohoo! There's also another very useful website here too(ahud010)

This is a very helpful link. It was very easy to understand and didnt stray off the topic. This link should be kept. klit014

this is a very helpful link as it provides on topic content with clear and unique stimulations.it is very helpful with the way the page is set up as it gradually links to other ideas without confusing you. has alot of heplful and clear diagranm. should definately be kept (vlin018)

## Online Physics books

for series of related information on light, waves ,frequency, with helpful answers to questions, see here(rlut006)