Sentence examples for theory is needed from inspiring English sources

Theory is needed to tell you where to look.

Quantum theory is needed for understanding nuclear structure.

At that level a quantum theory is needed to explain the characteristics of light and to explain the interactions of light with atoms and molecules.

It was state intervention, not the private market, that made metal specie work as money.That suggests another theory is needed, in which the state plays a bigger role in the origin of money.

Some such theory is needed, 65 years later, to account for the stunning appetite for evil evinced by people popping into their local libraries, as revealed again by the latest data released by Public Lending Right (PLR), covering the period from mid-2009 to mid-2010 mid-2010

Such a theory is needed to evaluate various government policies.

To make politicians comfortable with this approach to governance, a theory was needed that "deficits don't matter".

In the South, "no profound analysis, no overriding social theory was needed in order both to locate and understand the injustices that were to be combated," he wrote.

As a keynote speaker at the St. Louis World's Fair in 1904, he made a superb case for how badly such a theory was needed.

This adds ideas particularly technological know-how to the inputs of land, labour and capital that in traditional economic theory are needed for growth.

It was becoming apparent that the simple pictures provided by electrons, protons, and neutrons were incomplete and that a new theory was needed to explain fully the phenomena of subatomic particles.