My friend's last name is Kerr.

The Kerrs are a lovely family.

The Kerr effect is a phenomenon in which the refractive index of a material changes in response to an applied electric field.

The Kerr geometry describes the spacetime around a rotating black hole.

Kerr geometries are solutions to the Einstein field equations that describe rotating black holes.

Kerr County is located in the heart of the Texas Hill Country.

The surgeon made a Kerr incision to access the abdominal cavity.

The surgeon made multiple Kerr incisions during the procedure.

The Kerr black hole is a rotating black hole solution to the Einstein field equations.

There are many Kerr black holes in the universe.