🌐EnglishEnglishDeutschEspañolFrançaisTürkçe中文EntityQ7858741· pop 8· linked from 57 articlestwo-photon physicsAlso known as gamma–gamma physicsbranch of particle physics concerning interactions between two photonsWikidata factsImagePhoton-photon scattering.svgvia Wikidata · CC0Available in 8 languagesEspañolFrançaisDeutsch中文CatalanHebrewTürkçevia Wikidata sitelinks · CC0ConnectionselectronvoltEntityenergyEntityCategoriesExperimental particle physicsPhotonsQuantum electrodynamics