Each oneil was different, equidistant from any other around the surface of an imaginary sphere.

In perimetry, the observer's eye is considered to be at the centre of an imaginary sphere.

This skylight over the midblock transportation hall was to have been shaped like the section of a larger, imaginary sphere.

The difference is in the imaginary sphere which encloses this charged object.

This imaginary sphere is a very practical tool for positional astronomy.

It is a great circle on the imaginary celestial sphere, in the same plane as the Earth's equator.

All the stars appear to lie on the imaginary Celestial sphere.

This shows the imaginary sphere of the sky, surrounding the Earth at the center.

A solid angle is a section of the surface of the imaginary sphere around the antenna.

Human freedom acts in the phenomenal, not in an imaginary noumenal sphere.