Promienie 用英语:

X rays are used to locate breaks in bones.

He put on sunglasses to protect his eyes from ultraviolet rays.

The sudden increase of ultraviolet rays made the researchers believe in the existence of ozone holes.

Ultraviolet rays are harmful to us.

Ultraviolet rays can cause skin cancer.

The infant has been exposed to radioactive rays.

The lighthouse was beaming forth rays of light.

A beam of white light is split by a prism into rays of various colors.