from
The Collaborative International Dictionary of English v.0.48
Projector \Pro*ject"or\, n. [Cf. F. projeteur.]
1. One who projects a scheme or design; hence, one who forms
fanciful or chimerical schemes. --L'Estrange.
[1913 Webster]
2. an optical instrument which projects an image from a
transparency or an opaque image onto a projection screen
or other surface, using an intense light and one or more
lenses to focus the image. The term projector by itself is
usually used for projection of transparent images by
passing the light beam through the image; a projector
which projects an image of an opaque object is now
ususally referred to as an {overhead projector}. In
projection of this latter form the projection is
accomplished by means of a combination of lenses with a
prism and a mirror or reflector. Specific instruments have
been called by different names, such as {balopticon},
{radiopticon}, {radiopticon}, {mirrorscope}, etc.
[Webster 1913 Suppl. +PJC]
{Slide projector} a projector for displaying images from
individual transparencies (slides), each mounted in a
separate frame suited to the mechanics of the projector.
{movie projector} a projector which displays a series of
images from a roll of transparent film in rapid sucession,
thus giving the impression of showing a scene with motion
as it originally was recorded.
{overhead projector} see {projector[2]}, above. -->
[PJC]
from
The Collaborative International Dictionary of English v.0.48
Cinematograph \Cin`e*mat"o*graph\, n. [Gr. ?, ?, motion +
-graph.]
1. an older name for a {movie projector}, a machine,
combining magic lantern and kinetoscope features, for
projecting on a screen a series of pictures, moved rapidly
(25 to 50 frames per second) and intermittently before an
objective lens, and producing by persistence of vision the
illusion of continuous motion; a moving-picture projector;
also, any of several other machines or devices producing
moving pictorial effects. Other older names for the {movie
projector} are {animatograph}, {biograph}, {bioscope},
{electrograph}, {electroscope}, {kinematograph},
{kinetoscope}, {veriscope}, {vitagraph}, {vitascope},
{zoogyroscope}, {zoopraxiscope}, etc.
The cinematograph, invented by Edison in 1894, is
the result of the introduction of the flexible film
into photography in place of glass. --Encyc. Brit.
[Webster 1913 Suppl.]
2. A camera for taking chronophotographs for exhibition by
the instrument described above.
[Webster 1913 Suppl.]