The interferometer uses a laser beam and a light detector to measure the deflection.

The new detectors, using a method like a medical cat scan, measure the density of materials such as plastics.

A detector measures the time-averaged intensity of the light exiting the interferometer.

The detectors measure the change and convert it into thickness units that are graphically displayed.

"The field's so weak here that you need fancy detectors to measure it at all."

When this occurs the detector heats up and measures the change in resistance.

A detector measures the energy after the infrared energy has passed through the gas to be measured.

Our detector in that case will measure the loudness of the signal received at different points of the second screen.

A separate detector, called a calorimeter, absorbs and measures the energy of the particles.

A detector measures ions as they reach the end of the tube.