The villain's secret weapon was a collection of powerful death rays.

T-rays are a type of electromagnetic radiation.

Rai Sahib is a respected title in India.

Rai Bahadur is a respected title in Nepal.

Gamma rays are a form of electromagnetic radiation.

Cosmic rays are high-energy particles that originate from outer space.

Delta rays are high-energy electrons or positrons emitted by certain types of radioactive decay.

γ-rays are a form of electromagnetic radiation.

I saw a school of butterfly rays swimming in the ocean.

The crepuscular rays painted a beautiful scene in the evening sky.