1. Generation of electricity: Nuclear power plants use controlled nuclear fission to generate electricity. This process releases energy when atoms are split apart, which is used to heat water and produce steam. The steam then drives a turbine that generates electricity.

2. Propulsion of submarines and ships: Nuclear-powered submarines and ships use nuclear reactors to generate the electricity needed to power their engines. This allows them to travel long distances without needing to refuel.

3. Medical imaging: Nuclear medicine uses radioactive isotopes to create images of the inside of the body. This can be used to diagnose and treat various medical conditions, such as cancer and heart disease.

4. Cancer treatment: Radiation therapy uses high-energy radiation to kill cancer cells. This treatment is used in combination with surgery, chemotherapy, and other treatments.

5. Industrial radiography: Nuclear technology is used to inspect welds, castings, and other materials for defects. This is done by using a radioactive source to emit radiation through the material being inspected. Any defects will be sichtbar on the resulting radiograph.

6. Food preservation: Nuclear technology is used to preserve food by irradiating it with ionizing radiation. This process kills bacteria and other microorganisms that can cause food spoilage.

7. Research: Nuclear reactions are used in a variety of research fields, such as physics, chemistry, and materials science. This research can help us to better understand the world around us and to develop new technologies.

Overall, nuclear reactions have a wide range of uses in a variety of fields. These reactions have the potential to benefit society in many ways, but it is important to also be aware of the potential risks associated with nuclear technology.