The radiation dose from the X-ray was higher than expected.

The emergency position indicating radio beacon is a crucial device for communication during emergencies.

Radiological weapons are a serious threat to national security.

Emergency position indicating radio beacons are used to locate aircraft or vessels in distress.

The artist used bold and colorful radical lines in their painting.

The radical axes of the two circles intersect at a point.

Radio waves are used for communication and broadcasting.

Radio galaxies are some of the most powerful objects in the universe.

The radio galaxy emits powerful radio waves.

X-radiation is used in medical imaging to diagnose and treat various conditions.