# Impossible measurements require impossible apparatus

> Research article (Physical review. D/Physical review. D., 2021) · cited 56× · AI/ML

**Wikidata**: [openalex:W3010700856](https://www.wikidata.org/wiki/openalex:W3010700856)  
**Source**: https://4ort.xyz/entity/impossible-measurements-require-impossible-apparatus