Mass

The Mass of an object does not change when an object's location changes. Its weight, on the other hand, does. The MathMol Hypermedia Textbook

A woman finds all ordinary vows
insubstantial and volatile as the breeze
that pours galvanic electricity
over her skin. In this paradigm, I-do’s
have a common density
with fog no matter where she stands.
In some other landscape,
the aggregate force of an old litany
is caught in fingerprints, love-names. The almost-
forgotten caress is heavier in that location,
where once she lay down as part
of a couple, inside her a man’s weight
measuring matter, the body of his concentration,
the pull of that gravity on her heart.