ideal point
Noun
Meaning
ideal point (plural ideal points)
Synonym for omega point, in hyperbolic geometry. Also called: point at infinity
Examples
An ideal point source is an infinitesimally small point radiating sound.
Each family of parallel lines in a given direction is postulated to converge to the corresponding ideal point.
Note that this is only the case if the source is close to an ideal point source.
Parabolic reflectors resolve this, allowing incoming parallel rays (for example, light from a distant star) to be focused to a small spot; almost an ideal point.
Such transducers can cover a wide frequency range (80 Hz to 35,000 Hz) and have been promoted as being close to an ideal point sound source.