reciprocate
metacontrast
blaze
polarotaxis
lightward
self-luminous
convex lens
ardency
converging lens
bandpath
in the light of
photoentrainable
coruscance
levitation
backlighting
shining
phi
photoreconfigurable
luma
high beam
geotropism
shiny
horizonal
perpendicular
phototaxis
polarizance
high-beam
diattenuation
afterlight
optostimulation
photostructurable
optical phenomenon
vertical
aslantwise
retroilluminate
balisage
total internal reflection
photoneutral
concentrated
coorientable
amacratic
rectangularwise
visual angle
hard
sun line
opto-
obtuse angle
optical opacity
salient