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MathGroup Archive 2001

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Re: LightYear Conversion is Incorrect in Units Package

  • To: mathgroup at smc.vnet.net
  • Subject: [mg28626] Re: LightYear Conversion is Incorrect in Units Package
  • From: "Urijah Kaplan" <uak at sas.upenn.edu>
  • Date: Wed, 2 May 2001 03:37:18 -0400 (EDT)
  • Organization: University of Pennsylvania
  • References: <9cle01$18s@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

I believe you're calculating a year to be 365 days; a year is actually more
I believe you're calculating a year to be 365 days; a year is actually more
like 365.24219 days, and that explains the discrepancy.


            --Urijah Kaplan


"David Park" <djmp at earthlink.net> wrote in message
news:9cle01$18s at smc.vnet.net...
> Dear MathGroup,
>
> The LightYear conversion appears to be significantly incorrect in the
Units
> package.
>
> Needs["Miscellaneous`Units`"]
> Needs["Miscellaneous`PhysicalConstants`"]
>
> {Convert[LightYear, Meter], Convert[1.0Year SpeedOfLight, Meter]}
> {9.4605*^15*Meter, 9.454254955488*^15*Meter}
>
> I believe that the second value is the correct value. If you agree, you
can
> correct the Miscellaneous`Units` package by searching for LightYear and
> pasting in the correct value.
>
> David Park
> djmp at earthlink.net
> http://home.earthlink.net/~djmp/


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