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Get numbers out of PhysicalConstants?

• To: mathgroup at smc.vnet.net
• Subject: [mg62572] Get numbers out of PhysicalConstants?
• From: "Wonseok Shin" <wssaca at gmail.com>
• Date: Mon, 28 Nov 2005 01:38:15 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

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?

• Follow-Ups:
  • Re: Get numbers out of PhysicalConstants?
    • From: Renan <renan.birck@gmail.com>
  • Re: Get numbers out of PhysicalConstants?
    • From: <bsyehuda@gmail.com>