An Etymological Dictionary of Astronomy and Astrophysics

Existing or being everywhere, especially at the same time; omnipresent.

Etymology (EN): From L. ubiquitarius, from ubique “everywhere,” from ubi “where” + que “any, also, ever.”

Etymology (PE): From visp-, → omni-, + bâšandé, bâš, bâšâ “existing, being,” from budan “to be,” → condition.

Existing or being everywhere, especially at the same time; omnipresent.

Etymology (EN): From L. ubiquitarius, from ubique “everywhere,” from ubi “where” + que “any, also, ever.”

Etymology (PE): From visp-, → omni-, + bâšandé, bâš, bâšâ “existing, being,” from budan “to be,” → condition.

The state or capacity of being everywhere, especially at the same time; omnipresence.

Etymology (EN): From M.Fr. ubiquité, from L. ubique “everywhere,” → ubiquitous; → -ity.

Etymology (PE): Noun from visp-bâšandé, visp-bâš, visp-bâšâyi, → ubiquitous.

The state or capacity of being everywhere, especially at the same time; omnipresence.

Etymology (EN): From M.Fr. ubiquité, from L. ubique “everywhere,” → ubiquitous; → -ity.

Etymology (PE): Noun from visp-bâšandé, visp-bâš, visp-bâšâyi, → ubiquitous.

A → photometric system which consists of measuring an object’s → apparent magnitude through three broad-band filters: the ultraviolet (U) at 3650 Å, the blue (B) at 4400 Å, and the visual (V) in the green-yellow spectral region at 5500 Å. The filter bandwidths are 680, 980, and 890 Å respectively. The system is defined so that for A0 stars B - V = U - B = 0. The system was devised by Harold Johnson (1921-1980) and William Morgan (1906-1994) at Yerkes Observatory. It was extended to the R
and I bands centered at 7000 and 9000 Å respectively and later to other infrared bands.

See also: U, B, and V referring to “ultraviolet,” “blue,” and “visible” respectively; → system.

A → photometric system which consists of measuring an object’s → apparent magnitude through three broad-band filters: the ultraviolet (U) at 3650 Å, the blue (B) at 4400 Å, and the visual (V) in the green-yellow spectral region at 5500 Å. The filter bandwidths are 680, 980, and 890 Å respectively. The system is defined so that for A0 stars B - V = U - B = 0. The system was devised by Harold Johnson (1921-1980) and William Morgan (1906-1994) at Yerkes Observatory. It was extended to the R
and I bands centered at 7000 and 9000 Å respectively and later to other infrared bands.

See also: U, B, and V referring to “ultraviolet,” “blue,” and “visible” respectively; → system.