Re: [Phys-l] base of log

[Bernard Cleyet <bernardcleyet@redshift.com>]

Must be; I use ln and I'm very common.

bc

p.s.  Kaleidograph uses ln, does Excel also?


On 2008, Jul 03, , at 09:32, Alby Reid wrote:

> I've always used ln ("ell-en") for log_e - is this uncommon?
>
>
> Alby
>
> --
> Alby <alby@bleary-id.co.uk>
>
> -----Original Message-----
> From: phys-l-bounces@carnot.physics.buffalo.edu
> [mailto:phys-l-bounces@carnot.physics.buffalo.edu] On Behalf Of  
> John Denker
> Sent: 03 July 2008 15:43
> To: Forum for Physics Educators
> Subject: [Phys-l] base of log
>
> On 07/03/2008 06:52 AM, Dan Crowe wrote:
> > I have many books and papers in which "log" refers to the base e.  I
> > also have a comparable number of books and papers in which "log"
> > refers to the base 10.
>
> In the field of information theory, "log" very commonly refers to  
> base 2.
>
> ====================
>
> The only consistent approach to the subject it to say that "log" by
> itself does not denote or even connote any particular base.  It could
> be 2, e, 10, or something else entirely.  Sometimes the base is  
> specified
> by context, and sometimes it is left unspecified because it doesn't  
> matter.
>
> The huuuge base
>     exp(1/k)
> is often encountered in thermodynamics.  For the next level of  
> detail, see
>   http://www.av8n.com/physics/thermo-laws.htm#sec-s-units
inserted

> The integral of zee-squared dee zee,
> From 1 to the cube root of 3,
> Times the cosine,
> Of 3 pi over 9,
> Is the log of the cube root of e.
> _______________________________________________