In the complex reflection coefficient plane the Smith chart occupies a circle of unity radius centred at the origin.

As the transmission line is loss free, a circle centred at the centre of the Smith chart is drawn through the point P to represent the path of the constant magnitude reflection coefficient due to the termination.

He was a military tribune of P. Scipio Aemilianus Africanus at the siege of Numantia in Hispania in 134 B.C. Later he joined the circle of writers centred around Scipio Aemilianus.

The conservative circle, based in Berlin and Leipzig, centered around Johannes Brahms and Clara Schumann, and the Leipzig Conservatoire which had been founded by Felix Mendelssohn.

Two circles (C4) centered at D and D' with radius AD meet at A, and at O, the sought center of (C).

The circle of Norwich families centred on the Octagon Chapel added friendship to common intellectual and literary interests.

It introduced him to enlightened learning and a sophisticated life of foreign travel, and enabled him to move in the scientific circles centred round Sir Charles Cavendish.

The literary circle founded by Roemer Visscher later centered around Hooft, in whose castle at Muiden they regularly convened, and after which they were later called Muiderkring or "Circle of Muiden".

Construct a circle centered at A and passing through F (the second green circle)

Little could grow in the soil under an oak, but a thin circle of flowers and grass centered on the thick trunk above the Green Man's grave.