About: quarter wave plate

Premodifier: quarter wave
Head noun: plate

Same concepts
http://dbpedia.org/resource/Waveplate

Broader concepts

label	provenance	confidence
wave plate	isap:376720586	0.768148
means	isap:370161393	0.405179

Narrower concepts

label	provenance	confidence
circular polarizer	isap:15608122	0.709637