Re: A bawl in a rotating dish (was Hot air rising ...)

[Bob Sciamanda <trebor@VELOCITY.NET>]

> . . .
> 2. First some background...An object experiences a coriolis force when
its
> distance from the earth's axis changes.
> . . . Robert Cohen

Whence comes this dictum?
The coriolis force is proportional to ( w x v ), where w is the rotational
velocity vector of the earth, v is the subject particle's linear velocity
in the earth frame, and x denotes a cross product.  This is not zero when
v is tangential (ie., maintaining "a constant distance from the earth's
axis".

Bob

Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor