MathGroup Archive 2002

[Date Index] [Thread Index] [Author Index]

Search the Archive

Inaccurate constants?


If I execute the following:

<< Miscellaneous`PhysicalConstants`

<< Miscellaneous`Units`

Convert[GravitationalConstant*EarthMass/EarthRadius^2, Meter/Second^2]

I get 9.7997 Meters/Sec^2 - which is a rather inaccurate value for g!

I wonder if the EarthMass value has been calculated from one value of
G and a different value has been used in the package (G is hard to
measure and its accepted value has shifted somewhat).

I got that result while demonstrating Mathematica to a colleague, so
it was a bit embarrassing!

David Bailey


  • Prev by Date: Re: Using Symbols with Plot
  • Next by Date: Iterative application of FindRoot with adjusted started values
  • Previous by thread: Re: Suppression of output...
  • Next by thread: Iterative application of FindRoot with adjusted started values