| Share

Planck's constant

Planck's constant (plängks) [key], fundamental constant of the quantum theory. It is represented by the letter h and has a value of 6.63 × 10 - 34 J-sec. The combination h /2π, denoted by h (called "h-bar"), occurs frequently.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on Planck's constant from Infoplease:

See more Encyclopedia articles on: Physics

Premium Partner Content
HighBeam Research
Documents Images and Maps Reference
(from Newspapers, Magazines, Journals, Newswires, Transcripts and Books)

Research our extensive archive of more than 80 million articles from 6,500 publications.

Additional search results provided by HighBeam Research, LLC. © Copyright 2005. All rights reserved.

24 X 7

Private Tutor

Click Here for Details
24 x 7 Tutor Availability
Unlimited Online Tutoring
1-on-1 Tutoring