Criticism of the terms "Zero Gravity" and "Microgravity"

A continuation of Message-ID:
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Here is another analogy to help illuminate accurate physics as to why
zero-g is not "zero gravity":

Imagine floating down a river. You are moving at the same speed as
the water around you. It is accurate to say that there is zero
relative current. But it is totally inaccurate to say that you are
dry, in zero water.

Likewise, orbiting around the Earth can be thought of as flowing with
Earth's gravity in acceleration toward the center of the Earth. It is
accurate to say that there is zero-g, or zero acceleration relative to
your spacecraft. But it is *not* accurate to say that you are in zero
gravity.

The pull of gravity in orbit is strong. That's why you go around in
an orbit. Likewise the flow of a river can be very strong, even if
the water around you may look still while you're floating in it.

To play on that old commercial... Gravity? You're soaking in it!


~ CT