The theory of harmonic oscillators is a fundamental concept in physics.

My hometown is Fukuoka City, the prefectural capital of Fukuoka Prefecture.

He wakes up early in the morning.

Please stop deriding my dreams.

She uses a diaeresis in her name.

He is a genius, but even experts sometimes make mistakes. He also makes mistakes sometimes.

What is the current Korea Standard Time?

The Great Kanto Earthquake that occurred in 1923 is one of the most damaging earthquakes in Japanese history.

In order to solve this quantum mechanics problem, we need to find the eigenfunction.

My friend came from the Republic of Korea.