Re: Get numbers out of PhysicalConstants?
- To: mathgroup at smc.vnet.net
- Subject: [mg62594] Re: Get numbers out of PhysicalConstants?
- From: bghiggins at ucdavis.edu
- Date: Tue, 29 Nov 2005 04:44:37 -0500 (EST)
- References: <dme8l6$inj$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Try the following:
<< Miscellaneous`PhysicalConstants`
Times @@ Cases[VacuumPermeability,
x_?NumericQ :> x]
Cheers,
Brian
Wonseok Shin wrote:
> Hello,
>
> Is there any way to get numbers out of the constants defined in
> Miscellaneous`PhysicalConstants` package? Carrying units all the time
> is inconvenient in calculation.
>
> For example,
> In[1]:= << Miscellaneous`PhysicalConstants`
> In[2]:= VacuumPermeability
> Out[2]= \!\(\(p\ Second\ Volt\)\/\(2500000\ Ampere\ Meter\)\)
>
> I want to get the number p/2500000 out of VacuumPermeability, without
> units. How can I do this?