It opened in 1942 and for some time was the world's single most powerful source of electricity.

At the federal level, he argues, the Democrats are no longer a powerful source of progressive legislation.

The human body is a powerful source of energy.

In finding him she found what seemed like a powerful and inexhaustible source of love.

Both liberals and conservatives see it as a potentially powerful source of individual rights.

A powerful source is intended to bring about compliance in the receiver.

Somewhere to his left was a new and powerful source of monopoles.

The country has more powerful sources of identity - ethnicity, religion and especially race.

Added to this was a closer, more powerful light source.

The Church had continued to lose members in the 1970s and 1980s, yet it remained a powerful source of social criticism.