Postfix notation is one method of expressing calculations.

The Kokin Wakashū is the second collection of the Chokusen Wakashū.

Tokudaiji Sanesada, also known as Goto Tokudaiji Sadaijin, was a court noble and a literary person during the Heian period.

He is doing special exercises to strengthen his tibialis posterior muscle.

Strengthening the occipitalis muscle can reduce neck pain.

An abnormality was found in his occipital lobe.

We should always remember the power of Kannon in difficult times.

This mineral is called ulexite and has special optical properties.

This stone is a mineral called clinozoisite.

Studying the thoughts of the Hundred Schools of Thought is very important in understanding ancient Chinese culture.