The tau particle is a type of lepton in particle physics.

The muon is a part of particle physics.

The muon plays an important role in particle physics.

He is the lineage of the eldest son in that family.

Dry distillation is a chemical reaction that involves heating a substance to high temperatures, turning it into vapor, and then cooling it into a liquid or solid.

This old science book explains the concept of circular current in detail.

This rock is a very rare eclogite.

The torrent of that river becomes particularly intense during the rainy season.

We went to Hokkaido to see the drift ice.

It took a long time to erect this building.