parabolic mirror

noun 0.877

parabolic

noun 0.743

radar reflector

noun 0.719

retroreflector

noun 0.708

paraboloid

noun 0.705

reflector

noun 0.683

parabola

noun 0.656

reflecting telescope

noun 0.645

spherical mirror

noun 0.603

refracting telescope

noun 0.580

refractor

noun 0.568

solar collector

noun 0.566

plane mirror

noun 0.561

radio telescope

noun 0.548

horn antenna

noun 0.546

hyperboloid

noun 0.541

dipole antenna

noun 0.527

convex lens

noun 0.517

reflecting

noun 0.515

solar telescope

noun 0.512

optical flat

noun 0.510

micromirror

noun 0.509

loop antenna

noun 0.505

reflection

noun 0.504

projector

noun 0.503

hyperbola

noun 0.502

circular cone

noun 0.502