focuses

URI: https://gptkb.org/prop/focuses
4 triples
GPTKB property
Random triples
Subject Object
gptkb:Reflecting_telescopes light rays
gptkb:Wolter_type_I grazing incidence X-rays
gptkb:Apochromatic_Lens Three wavelengths to the same point
gptkb:Parabolic_Dishes gptkb:Electromagnetic_Waves