doublet


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Related to doublet: doublet antenna, doublet flow

doublet

1. Physics
a. a multiplet that has two members
b. a closely spaced pair of related spectral lines
2. two dice each showing the same number of spots on one throw
3. Physics two simple lenses designed to be used together, the optical distortion in one being balanced by that in the other

doublet

[′dəb·lət]
(atomic physics)
Two stationary states which have the same orbital and spin angular momentum but which have different total angular momenta, and therefore have slightly different energies due to spin-orbit coupling.
(electromagnetism)
(fluid mechanics)
A source and a sink separated by an infinitesimal distance, each having an infinitely large strength so that the product of this strength and the separation is finite.
(optics)
A lens made up of two components, especially an achromat.
(particle physics)
Two elementary particles which have slightly differing masses and the same baryon number, spin, parity, and charge conjugation parity (if self-conjugate), but have different charges.
(physical chemistry)
Two electrons which are shared between two atoms and give rise to a nonpolar valence bond.
(spectroscopy)
Two closely separated spectral lines arising from a transition between a single state and a pair of states forming a doublet as described in the atomic physics definition.
References in periodicals archive ?
Among the 43 patients who were evaluable for response, the objective response rate for all tumor types was 30% (38% for the doublet dosing schedule and 18% for the triplet dosing schedule), with a 7% complete response rate and a 23% partial response rate.
in the first terms of (6) and (7), suggest that free particles and their antiparticles exist in two separate spaces, corresponding respectively to the negative and positive branches of the PV charge doublet.
We were really looking forward to the coat and doublet returning to us", said Julie Hawthorn, house and collections manager at Seaton Delaval Hall.
So far, 65 people have been arrested as part of Operation Doublet and the investigation continues.
To examine the process of disintegration of sperm flagella by sliding between outer doublet microtubules, an extracted sperm suspension of 10 pl was transferred to an observation chamber and then covered with a glass coverslip.
Matrix Formulation: Since for an interior flow problem, the equation of indirect panel method for the doublet distribution alone is:
He galloped on, his sweat-soaked doublet clammy and cold under the jack, eyes and nose streaming from the bitter wind.
The yacht was built in Falmouth, Cornwall, in 1992 and named in honour of Anne's horse Doublet, which she won the European Eventing Championship on.
Stewart said that it's difficult to determine if doublets have been previously identified, let alone studied.
He covers fundamentals of accelerator magnets, magnet modeling, three-dimensional field multipole expansion, particle optics in a single quad, magnetic interference between two magnets, particle optics in a quad doublet assembly, particle tracking in beam lines, and the SNS ring Extraction Lambertson Septum magnet.
The MG3690C Series generates doublet, triplet, and quadruplet pulses with independent control of spacing and pulse width.
adventure THE MAN IN THE YELLOW DOUBLET Arturo Peres-Reverte In the latest swashbuckling Captain Alatriste novel, Perez-Reverte takes us into the dark world of subterfuge and betrayal that is the Spanish court.