In other words, if the experiment failed then the theory was dead.

He was sure it would be a success, too, and did not even consider that the experiment might fail.

The experiments of the last 30 years in bringing up the young have failed.

It was clear he would feel in some way satisfied if the experiment failed.

You might as well know that the last experiment failed, though it was closer.

As is often the case in medical research, the experiment failed.

Their last experiment had failed after less than half the time.

He stayed long enough to learn that his experiment had failed.

The experiment failed, and the Americans lost by 19 international match points.

Her experiment failed, or succeeded only in part, for a different reason.