Resonance happens when any two periods have a simple numerical ratio.

DrJazz: you're not quite comparing things right with those simple ratios.

I am comparing things correctly with those simple ratios.

A simpler ratio to remember is seven to four: 70 proof is 40% alcohol by volume.

A simple ratio is computed to determine what percentage of an investment is debt-financed.

But these systems all involved some arbitrary constant, as opposed to the simple ratio of focal length and diameter.

No simple ratio can tell everything that any investor - value or otherwise - needs to know about a stock.

It is a complement to batting average, which is a simple ratio of base hits to at bats.

The height of the second triangle can then be determined through a simple ratio, as proven by Euclid.

Atoms of different elements combine in simple whole-number ratios to form chemical compounds.