OT: Speed of light

[Jeff Schwab]

David H Wild wrote:
> In article <5LednYnShMTspS7anZ2dnUVZ_ternZ2d at comcast.com>,
>    Jeff Schwab <jeff at schwabcenter.com> wrote:
>> We (Americans) all measure our weight in pounds.  People talk about how
>> much less they would weigh on the moon, in pounds, or even near the
>> equator (where the Earth's radius is slightly higher).
> 
> Their weight on the moon would be exactly the same as on earth if they used
> a balance with weights on the other side of the fulcrum.

That's true, because they would really be indirectly measuring mass.  By 
"weight," though, most people mean the force exerted by gravity.