In agriculture, isotopes can also help us today. Radioactive isotopes are used in the agricultural industry as tracers in plants. They are added to fertilizers in small but known amounts. The researcher can then research the uptake by how radioactive the plant has become.
Radioactive isotopes can also be used in engineering. They are used in smoke detection, measuring its thickness. Another way of using radioactive isotopes is by using the rate of decay from machines to predict the wear of non-visible radioactive parts. Also, it is used to measure the radioactivity of lubricants in contact with machinery that is radioactive itself.
It can also be beneficial in other ways, but these are common uses.

