orbital

(redirected from Orbitals)
Also found in: Dictionary, Medical.

orbital

[′ȯr·bəd·əl]
(atomic physics)
The space-dependent part of the Schrödinger wave function of an electron in an atom or molecule in an approximation such that each electron has a definite wave function, independent of the other electrons.
References in periodicals archive ?
In principle, he says, the technique should handle orbitals even the megamolecules of life, such as proteins and DNA.
In this scheme, [SO.sub.3]'s sulfur atom forms six equivalent bonds, two with each oxygen atom, yielding a unique structure in which each bond comprises a pair of localized orbitals. There's no need to invoke resonant structures or "delocalized" orbitals, Messmer says.
Cooper of the University of Liverpool, Joseph Gerratt of the University of Bristol and Mario Raimondi of the University of Milan indicate that the "delocalized" electrons of molecular orbital theory are actually localized in deformed orbits about the individual carbon atoms.
Assuming completion of the merger, shares of Orbital common stock are expected to be delisted after the close of trading on February 9.
Orbital's TSD will provide program management, mission planning, engineering services and field operations for the scientific balloon program, which has a 50-plus year history of support for high-altitude scientific research.
Under the new approach and in line with Orbital's existing CRS contract, all remaining cargo will be delivered to the International Space Station (ISS) by the end of 2016.
OCO-2 is the 151st satellite Orbital has built and delivered to commercial, civil government and national security customers over the past 32 years.
The deployments continued Orbital's operational activity this summer, which has included the fourth launch of its Antares rocket, a launch of the company's OBV long-range missile defense interceptor, the deployment of the Orbiting Carbon Observatory-2 satellite for NASA, and the successful launch of three suborbital research rockets, all of which took place since late June.
Orbital will integrate a total of 81 satellites for the constellation, including 66 low-Earth orbit operational satellites, six in-orbit spares, and nine ground-backup spacecraft, over the next three years.