AMBER Archive (2008)

Subject: Re: AMBER: velocity units?

From: David A. Case (case_at_biomaps.rutgers.edu)
Date: Mon Nov 17 2008 - 10:53:19 CST

On Mon, Nov 17, 2008, Jose Borreguero wrote:

> I was wondering if the velocity units output in the restart files for Amber
> 9.0 and above are different than the *Angstrom/(20.455psec)* specified in
> http://ambermd.org/formats.htm.

The web page you refer to says this:

  velocity units: Angstroms per 1/20.455 ps

This is *not* what you wrote above. The velocites give the number of
Angstroms travelled in (roughly) 50 fs, not 20 ps.

[The unit of length in Amber is Angstroms; the unit of time is 1/20.455 ps.
Velocities have units of length/time.]

...dac

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