Final answer:
The three basic principles of radiation safety are time, distance, and shielding, all of which are used to minimize one's exposure to radiation.
Step-by-step explanation:
The three basic principles of radiation safety are time, distance, and shielding. To minimize exposure to radiation, it is essential to keep the time spent in the radiation environment to a minimum, because less time means less exposure. Additionally, one should maintain as much distance from the radiation source as feasible. Radiation intensity decreases with the square of the distance from the source, enhancing safety with increased space. Finally, proper shielding between individuals and the radiation source is vital. The more effective the shielding, usually with dense materials like lead, the less the exposure to radiation. In medical contexts, such as dental x-rays, technicians employ these principles to protect both patients and themselves from unnecessary radiation exposure.