planckian - portable track
- planckian
- planckian radiator
- plane
- plane aerial
- plane angle
- plane away
- plane bit
- plane coordinates
- plane curve
- plane diffraction grating
- plane discontinuity
- plane down
- plane face
- plane figure
- plane fracture
- plane framework
- plane geometry
- plane girder
- plane milling
- plane mirror
- plane of collimation
- plane of delineation
- plane of flapping
- plane of flexure
- plane of incidence
- plane of polarization
- plane of projection
- plane of reference
- plane of rupture
- plane of shear
- plane of sighting
- plane of symmetry
- plane of vision
- plane of weakness
- plane pointing frame
- plane polarization
- plane print
- plane printing
- plane section
- plane stress