Talk:Hertz
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Can the pages Megahertz, Kilohertz etc be more than stubs?
Should we redirect them here, where we can put a list of SI multiples? -- Tarquin
- No. I think we should also have picohertz, yottahertz etc. Just kidding. It might be useful think about consolidating all these SI pages so that the article is at the preferred SI standard with all the other prefixed stuff redirecting to it. Hm. That would mean that gram would redirect to kilogram, kilometre to metre, square kilometre to square metre etc. --mav
- One picohertz is approximately equivalent to once per 31710 years. — JIP | Talk 15:11, 1 May 2005 (UTC)
- Megahertz should be left as-is, whereas the rest (e.g. Kilohertz) should simply be merged into Hertz.
Audio frequency ranges
I noticed that frequency ranges were listed for visible light, but only a few select audio frequencies were listed. Might it be useful to note that the range from roughly 20Hz to roughly 16KHz covers the ability of the human ear to distinguish sounds? Or even note the higher ranges (or lower) used by other animals (dogs, whales, etc)?
-- T.Moore
- Good suggestion; thanks! I'll see to it. --Wernher 22:35, 2 Jul 2004 (UTC)
Hz and human range of hearing
Can someone help me understand why dog whistles are considered 'silent' (as in beyond the range of human hearing) when most of them are (at about 5800 Hz) well within the range of audible sound (20Hz - 16kHz) for human hearing? Thx.
- Because the maximum human ear performances are in the middle frequencies. A sound as treble as 6kHz has to be quite loud for you to clearly hear it.
Capitals and lower case
Anybody know why in "kHz", the "k" is lower case, whereas in "MHz" the "M" is upper?
DanielVonEhren 21:46, 25 Jan 2005 (UTC)
- The SI system of numbers has k (or kilo) as the prefix for 1000, m (or micro)as the prefix for a millionth and M (or Mega) as the prefix for a 1,000,000. So that MHz is 1,000,000 Hz and mHz is 1/1,000,000Hz. See Kilo. Tiles 06:31, 27 Jan 2005 (UTC)
Excellent! The Kilo page has all sorts of things I'd looked at all my life, but never really saw. Thanks Wellington (great place, by the way).
DanielVonEhren 05:35, 28 Jan 2005 (UTC)