- In optics, the
refractive index (or
refraction index) of an
optical medium is the
ratio of the
apparent speed of
light in the air or
vacuum to the speed...
- In physics,
refraction is the
redirection of a wave as it p****es from one
medium to another. The
redirection can be
caused by the wave's
change in speed...
- A
refracting telescope (also
called a
refractor) is a type of
optical telescope that uses a lens as its
objective to form an
image (also
referred to a...
-
Refractive error is a
problem with
focusing light accurately on the
retina due to the
shape of the eye and/or cornea. The most
common types of refractive...
-
Levelling refraction refers to the
systematic refraction effect distorting the
results of line
levelling over the Earth's surface. In line levelling, short...
-
Molar refractivity, A {\displaystyle A} , is a
measure of the
total polarizability of a mole of a
substance and is
dependent on the temperature, the index...
-
Subjective Refraction is a
technique to
determine the
combination of
lenses that will
provide the best
corrected visual acuity (BCVA). It is a clinical...
-
Refractive surgery is an
optional eye
surgery used to
improve the
refractive state of the eye and
decrease or
eliminate dependency on gl****es or contact...
- In optics,
negative refraction is the
electromagnetic phenomenon where light rays
become refracted at an
interface that is
opposite to
their more commonly...
-
Refraction, in acoustics,
comparable to the
refraction of
electromagnetic radiation, is the
bending of
sound propagation trajectories (rays) in inhomogeneous...
