Heisenberg

[ hahy-zuhn-burg; German hahy-zuhn-berk ]

noun

1. Wer·ner Karl [ver, -n, uh, r, kah, r, l], 1901–76, German physicist: Nobel Prize 1932.

Heisenberg

/ ˈhaizənbɛrk; ˈhaɪzənˌbɜːɡ /

noun

1. HeisenbergWerner Karl19011976MGermanSCIENCE: physicist Werner Karl (ˈvɛrnər karl). 1901–76, German physicist. He contributed to quantum mechanics and formulated the uncertainty principle (1927): Nobel prize for physics 1932

Heisenberg

/ hī′zən-bûrg′ /

1. 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.

Example Sentences

To the chagrin of many physicists, the Heisenberg uncertainty principle determines that one cannot simultaneously know a signal's position and momentum, or voltage and current, with accuracy.

From Science Daily

"Our work realizes effectively the Heisenberg microscope -- long thought to be only a theoretical toy model."

From Science Daily

For this endeavor, the Heisenberg group imported adult ascidians from the Roscoff Marine Station in France.

From Science Daily

Quantum theory tells us that particles obey Heisenberg's uncertainty principle, and we can never know their position or velocity at the same time.

From Science Daily

This is because of an idea in quantum physics called Heisenberg's uncertainty principle.

From Scientific American