Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
dipso
dipsomania
dipsomaniac
dipstick
dipteran
diptych
dipyridamole
diquat
Dirac constant
Dirac equation
dire
dire straits
dire wolf
direct
direct access
direct action
direct connection
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

Dirac constant
Di·rac con·stant


noun 
Definition:
 
constant in quantum mechanics: a constant used in quantum mechanics that is Planck's constant divided by 2π
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft