Re: emf and batteries

[Bernard Cleyet <anngeorg@PACBELL.NET>]

Thank you.

I had never (believable?) never heard the term intensive / ex.  until I
joined this list.  Now I know what it means, tho I'll probably never
remember which is what.  (What is which?).  I was taught specific e.g.:
s.g., s.h., density (specific mass) areal density (for nuclear
absorption), etc.

Why ten neologism?

bc

p.s. one is, usually, capitalized the other not

Ronald Newburgh wrote:

> Clement's comment on students'difficulties with understanding ratios is
> well taken.  It often helps if one emphasizes the distinction between
> extensive and intensive quantities ; e.g. force and pressure, mass and
> density, electric force and field,  electric potential  and potential
> energy.  Once they realize that the intensive quantities do not depend
> on the size (or extent) of the object, many seem to grasp the ideas a
> bit better.
>
> Ronald Newburgh