Thanks to the method and material, they achieved perfectly concentric cylinders with a precise outer diameter and smooth surface - just as required.

Instead of disks, most modern sirens use two concentric cylinders, which have slots parallel to their length.

We have managed, though, to derive the capacitance of concentric cylinders, a formula used in practical engineering, so we have certainly achieved something.

A Taylor-Couette flow describes the fluid behavior between 2 concentric cylinders in rotation.

The most common form is inter-meshed concentric cylinders.

It consists of a number of conductive concentric cylinders around a central antenna.

In professional student laboratory kits, the container A is often in the form of two concentric cylinders of metal screen, open at the top.

The tower is made up of two concentric concrete oval cylinders which do not come in contact with each other.

These contain a concentric internal cylinder.

In typical designs, however, the capacitor is not made from two flat plates, but from two concentric cylinders.