The villain used his death-rays to destroy the city.

The meridional rays of light pass through the lens and converge at a focal point.

N-rays are a controversial form of radiation.

The Rai Sahibs were honored for their contributions to society.

The Rai Bahadurs were honored for their contributions to society.

Roentgen-rays are used in medical imaging to diagnose various conditions.

Röntgen rays are used in medical imaging to diagnose and treat various conditions.

Chiang Rai is a beautiful province in Thailand.

The rays of sunshine streamed through the window.

The medullary rays in the wood help transport water and nutrients.