The technician calibrated the speaker by measuring a 440 Hertz tone to ensure accurate pitch.

Hertz is a German surname.

The technician tested the speaker's response at several hertzes to ensure consistent sound across the range.

The audio engineer adjusted the equalizer to boost frequencies at 2,000 hertz for a clearer vocal.

The lab produced three Hertz donuts during the resonance experiment.

My friend offered me a Hertz donut as a prank, and I pretended to take a bite before we both started laughing.

The mathematician proposed a new Hertzian method for analyzing electromagnetic boundary-value problems.

The Hertzlers arrived early to claim their inheritance.

The Hertzbergs arrived early to set up the exhibition, carrying crates of fragile glassware.

Hertzberg reviewed the draft of the policy and suggested several improvements.