Dictionary.com

Heisenberg

[ hahy-zuhn-burg; German hahy-zuhn-berk ]
/ ˈhaɪ zənˌbɜrg; German ˈhaɪ zənˌbɛrk /
Save This Word!

noun
Wer·ner Karl [ver-nuhr kahrl], /ˈvɛr nər kɑrl/, 1901–76, German physicist: Nobel Prize 1932.
QUIZ
TEST YOUR MERIT ON THESE NEW WORDS IN 2021
The Dictionary added new words and definition to our vast collection, and we want to see how well-versed you are in the formally recognized new lingo. Take the quiz!
Question 1 of 8
What does JEDI stand for?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use Heisenberg in a sentence

British Dictionary definitions for Heisenberg

Heisenberg
/ (ˈhaɪzənˌbɜːɡ, German ˈhaizənbɛrk) /

noun
Werner Karl (ˈvɛrnər karl). 1901–76, German physicist. He contributed to quantum mechanics and formulated the uncertainty principle (1927): Nobel prize for physics 1932
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for Heisenberg

Heisenberg
[ hīzən-bûrg′ ]
Werner Karl 1901-1976

See more at uncertainty principle.
German physicist who founded the field of quantum mechanics in 1925 and elaborated the uncertainty principle in 1927. He was awarded the Nobel Prize for physics in 1932.

Biography

Philosophical problems concerning what it means to know something about the world have always been of interest to many scientists, but philosophy underwent an unexpected twist with the advent of what we now call the uncertainty principle or the Heisenberg uncertainty principle, after its discoverer. A brilliant physicist, Werner Heisenberg had made discoveries by the age os 24 that would garner him a Nobel Prize a few years later (in 1932), namely, a way of formulating quantum mechanics using the then-new branch of mathematics called matrix algebra. In 1927, he formulated a quantum mechanical indeterminacy or uncertainty principle, which concerns how accurately certain properties of subatomic particles can be measured. Earlier physical theories had held that the accuracy of such measurements was limited only by the accuracy of available instruments. Heisenberg overturned this notion by demonstrating that no matter how accurate the instruments, the quantum mechanical nature of the universe itself prevents us from having complete knowledge of every measurable property of a physical system simultaneously. For example, the more precise our knowledge of a subatomic particle's position, the less precise our knowledge of its momentum; more profoundly, the particle does not merely have a momentum that we simply cannot accurately measure, but literally does not have a determinate momentum. This principle had profound implications not just for physics, but also for twentieth-century philosophy, as it threw into question certain basic principles such as causality and determinacy, and suggested that the very act of observing the universe profoundly shapes it. Nonetheless, Heisenberg's quantum mechanical equations have led to physical theories with vast practical applications, bringing us everything from the transistor to new drugs.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
FEEDBACK