Re: [Phys-L] Halfway point ???

[John Denker <jsd@av8n.com>]

On 04/03/2015 05:55 AM, Bob Sciamanda wrote:
> Can anyone discern a “thought process” which makes this statement meaningful ?

1) Evidently "halfway" means geometric average.

2) Suppose you are building a scale model.

An X particle with an extra proton stuck on the side is
represented, at scale, by the planet earth with an extra
X particle stuck on the side.

When I do the math, X is somewhat too big to qualify
as a "dust" particle, but the general idea is not
completely crazy.

============

More generally, it is an amusing grade-school exercise
to build a scale model of the solar system.  If the
earth is represented by a ping-pong ball, how big is
the moon, and how far away?  How big is the sun, and
how far away?