a due refracts sound
refractometer is measuring_instrument. correction_tape_refill is refill. double_refraction is refraction. correction_tape_refill is tangible_thing. refractor is telescope. refractoriness is intractability. refractometer is not measuring_instrument. audible_sound_or_sound_sequence is transfer. correction_tape_refill is text_correction_product. double_refraction is not refraction.