How it approached Uldune and landed without registering on detection instruments isn't known.

Dr. Fleischmann promised to use better detection instruments in future experiments.

A number of commonly used detection instruments are listed below.

The campaign fleet circled above the field while our copter with the detection instruments made a sweep of the area.

According to the detection instruments, that was the only sort of radiation and air pollution they had to worry about.

Such procedures would be successful, of course, only if detection instruments indicated the need to evacuate in time to allow them to sound the warnings.

Rat spoke quietly to Mark James in the backseat to turn on his detection instrument.

The strangers had not been heard from and was not another indication of there existence on the detection instruments.

"Hoist the helicopter on board, finish refueling, make a final check of the detection instruments; I'd say 2100 hours this evening, sir."

And the reason is a detection instrument of some kind.