Re: LightYear Conversion is Incorrect in Units Package
- To: mathgroup at smc.vnet.net
- Subject: [mg28617] Re: [mg28605] LightYear Conversion is Incorrect in Units Package
- From: BobHanlon at aol.com
- Date: Wed, 2 May 2001 03:37:08 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
The difference is due to the meaning of Year.
Convert[Year, Day]
365*Day
Convert[Convert[LightYear, Meter]/SpeedOfLight, Day]
365.24110215533767*Day
Bob Hanlon
In a message dated 2001/5/1 12:42:17 AM, djmp at earthlink.net writes:
>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.
>