What are the best ways to protect against exposure to radiation is?

Answer 1

Three factors affect radiation exposure- time, distance,, shielding. Time can be controlled in some cases by planning work in advance to limit the time you are exposed. Distance is frequently the best control- since exposure is based on the inverse square of the distance. Stay as far from the source as possible. Shielding is effective, however, is often not practical. Enough lead and concrete CAN stop most gamma rays- but you cannot walk wearing a ton of lead and concrete.