This simple formula states the relationship between energy and matter.

For some ears the divide between form and matter would have been palpable.

School curricula in the early 1990s are balanced between academic and political subject matter.

Again, the practical distinction between this and dark matter isn't entirely clear.

It seems to be in a borderline state between matter and energy.

They point out that this harmonizes with the scientific idea of the relationship between matter and energy.

Spectroscopy is the study of the interactions between light energy and matter.

Dualism is a set of views about the relationship between mind and matter (or body).

That's a splendid goal but the Mayor could do more to close the gap between mind and matter.

Büchner is not always clear in his theory of the relation between matter and force.