noun, noun which may take the genitive case particle 'no'
Technical term used in physics and related fields to describe the property of waves (light, sound, etc.) maintaining a fixed phase relationship.
レーザー光は干渉性が高い。
Laser light has high coherence.
干渉性のない光源では、干渉縞は
With an incoherent light source, interference fringes are difficult to observe.
コヒーレンス is the direct loanword for 'coherence' and is often used interchangeably with 干渉性 in technical contexts.
Compound of 干渉 (interference) and 性 (property/nature), literally 'interference property'. The term is a calque from English 'coherence' in the physics sense.