This sentence is written in the passive voice.

He was half dead from fatigue.

He became a successful businessman by fully utilizing his talents.

He made full use of that opportunity.

My grandmother's forty-ninth day is next week.

He searched for a flashlight in the darkness.

The photoelectric effect is a phenomenon where a material emits electrons after absorbing light.

An electrooculogram is a test method to record the movement of the eyeball.

He measured muscle activity using an electromyograph.

I examined muscle activity using an electromyogram.