21.   He studied women who were wearing nicotine skin patches as a way to measure the amount of nicotine they were taking into their reproductive systems.

22.   If all celestial objects were of the same intrinsic brightness, then their distances could be easily gauged by measuring the amount of their light reaching Earth.

23.   In addition, the Fed revised lower the October plant-use rate, which measures the amount of industrial capacity in use.

24.   Investigators have identified several potential ignition sources that are missing, like the probes that measured the amount of fuel in the center tank.

25.   It will use radar to measure rainfall amounts from space, including the Pacific.

26.   Meatpackers and retailers counter that government figures fail to reflect a significant drop in prices because they do not measure the amount of pork sold at a discount.

27.   Measuring the amount of displacement provides a direct gauge of the rate of squeezing.

28.   Photo sensors continuously measure the amount of daylight in the building and adjust the light fixtures so only the necessary amount of artificial light is used.

29.   Productivity gauges efficiency by measuring the amount of goods and services produced per hour by all workers, adjusted for seasonal fluctuations.

30.   Ron Dorn, a geography professor at Arizona State University, has dated the Fisherman by using an experimental technique that measures the amount of lead deposited on rocks.