h-bar


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h-bar

[′āch ‚bär]
(quantum mechanics)
A fundamental constant equal to h /2π, where h is Planck's constant. Symbolized ℏ. Also known as Dirac h; h-line.

H-bar

A steel bar shaped like an H; used in structural systems; one form of main runner in a suspended acoustical ceiling.
References in periodicals archive ?
Natasha Hamilton - incredibly frustrated Natasha Hamilton''s H-bar, in Victoria Street
In addition, H-bar markings will be put down outside any homes where the owners want them, in a bid to prevent parents from parking across driveways.
To produce the TEM samples in this investigation the so-called "H-bar lift-out" technique was used enabling a very high site-specific accuracy 14].