St. Elmo's fire is a phenomenon of electrical discharge that appears on things like ship masts and airplane wings.

In winter, static electricity often occurs.

He suddenly appeared in front of me.

When lightning discharges electricity into the air, we observe it as a flash of lightning.

Lightning is one of the electrical discharge phenomena in the atmosphere.

There are several skills that are required for this project.

This is absolutely a must-have item.

He was repairing the mast of the ship.

I am going to Tokyo by airplane tomorrow.

This phenomenon remains unexplained for scientists.