| | RE: Hertz Answer 7/16/09 2:49 PM as a reply to David Charles Greeson. Hi Haquan,
As you pointed out, Hz means cycles per second. So a clock ticks at one Hz. If you add an extra tick in between the ticks of the clock, i.e. Tick, tick, Tick, tick, Tick, tick, you would have two Hz. If you do what in music is called a "triplet" in time with the clock, i.e., Tick, tick, tick, Tick, tick, tick, Tick, tick, tick, etc., you would have three Hz. I don't mean to bore you with what you already know, but I just wanted to build it from the ground up for those who may not be familiar with the term.
Where it gets tricky, and I think this is what you are asking about, is what does 20 Hz look/feel like? Below is a link to a webpage that demonstrates various frequency of strobing text.
EPILEPSY ALERT! DO NOT VISIT THIS LINK IF YOU HAVE PHOTOSENSITIVE EPILEPSY! CERTAIN FREQUENCIES CAN INDUCE SEIZURES IN SENSITIVE INDIVIDUALS.
http://ncam.wgbh.org/richmedia/media/flicker_demo.html |