Connections
focal length
Entity
diaphragm
Entity
ray
Entity
photography
Entity
anatomy
Entity
International Standard Book Number
Entity
atmosphere of Earth
Entity
vacuum
Entity
line
Entity
point
Entity
image
Entity
digital object identifier
Entity
refraction
Entity
parallax
Entity
Q180686
Entity
refractive index
Entity
human eye
Entity
bibcode
Entity
lens
Entity
dioptre
Entity