Re: logarithmic scales?
- From: Denis Feldmann <denis.feldmann.asupprimer@xxxxxxxxxxxxxxxx>
- Date: Wed, 05 Dec 2007 18:19:11 +0100
David W. Cantrell a écrit :
neelsmail@xxxxxxxxxxxxxx wrote:Hi,
I came across an article (http://scienceblogs.com/cognitivedaily/
2007/12/one_of_our_readers_emailed.php) on the net. It is about how
kids perceive numbers. Apart from it's main subject, one of the users
there commented that: "We perceive a lot of things on logarithmic
scales -- sound intensity and light intensity, to name a couple of
obvious ones.". This is something I didn't understand and since the
article didn't discuss this subject I didn't find it appropriate to
ask there what does perceiving things on logarithmic scales mean?
I have learned maths, and logarithms as well, but neither I remember
nor relate the meaning of logarithms to us perceiving something in
logarithmic scale in real world.
I recommend a Google search for decibel.
Or for "Fechner law"
.
David
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