Assertion: wave's vibration | /r/HasProperty | perpendicular
Facets:
value: to the direction of propagation
type: OTHER
Source sentences:
text: In 1672 Hooke suggested that light's vibrations could be perpendicular to the direction of propagation.
text: Transverse wave: the vibrations of particles are perpendicular ⊥ to the direction of travel of the wave.