But until now detectors sensitive to them have not been available.

Recently, more sensitive detectors have become available, making the technique better suited to general use.

"I'd have thought that would at least skew some of the more sensitive detectors."

But so far, after decades of searching with increasingly sensitive detectors, scientists have not found one.

Spock, however, had more sensitive detectors in his science station.

Robot eyes and sensitive detectors guard the security of our prisons.

Using highly sensitive electronic detectors, they were able to follow the asteroid for the unusually long time of six hours.

Radio telescopes are highly sensitive detectors of signals from outer space.

Scientists are attempting to demonstrate the existence of these waves with ever more sensitive detectors.

This signal is called fluorescence and can easily be measured with sensitive detectors.