This input device is very easy to use.

This rock is radioactive, so care must be taken when handling it.

Electromagnetic radiation conveys energy in forms such as light and radio waves.

He is receiving treatment for brain radiation.

Islamic fundamentalism is perceived by some as demanding strict religious norms.

I forgot my username.

The central processing unit of this computer is very fast.

This speech synthesizer generates very high-quality voices.

Cosmic background radiation is considered evidence of the Big Bang.

Radioactive elements are produced in nature and scientific experiments.