Tokemi is my best friend.

He is living in a world of ignorance.

He likes to take a walk in the park at dusk.

When I looked into her eyes, the phrase 'the eyes are the window to the soul' came to mind.

This house is warm even in winter because it has double-pane windows.

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.

The doctor used an electrocardiograph to check the condition of my heart.

I examined muscle activity using an electromyogram.