1.   Concealed by a series of stone circles, the site was detected by instruments designed to reveal ancient remains without disturbing the land.

2.   For four days after the Landers quake, those instruments detected seismic activity far in excess of the usual.

3.   MRS instruments detect the magnetic signature of these molecules, and plot areas of concentration, which equate with cancer hot spots.

4.   On the buildings still standing, the LIDAR instrument detects piles of debris on the roofs.

5.   Such instruments detect volatile compounds that evaporate from a solution to give an odor.

6.   The instruments can also detect sharp temperature differences at different altitudes, another factor in ozone damage.

7.   The instrument detected splotches of dry air east of the peaks of the Sierra Nevada, where Pacific winds were drying on descent toward valleys.

8.   For this reason, said Thompson, the infrared instrument could detect galaxies that were invisible to earlier Hubble studies.

9.   It was not visible, but instruments detected high concentrations of soot and sulfates of the type produced by burning kerosene rocket fuel.

10.   It was not visible to the eye, but instruments detected high concentrations of soot and sulfates of the type produced by burning kerosene rocket fuel.