Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics The limit on measurement accuracy at quantum scales due to back-action effects.
- noun spectroscopy The shortest wavelength in an X-ray spectrum.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
The spectroscopic sense is first attested in the 1920s; the measurement sense was coined by Vladimir Braginsky in a 1967 paper, and was originally restricted to the study of gravitational waves.
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