home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The Epic Interactive Encyclopedia 1998
/
Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
/
P
/
Prism
/
INFOTEXT
< prev
Wrap
Text File
|
1992-09-02
|
543b
|
17 lines
In mathematics, a solid figure whose cross
section is constant in planes drawn
perpendicular to its axis. A cube, for
example, is a rectangular prism with all
faces (bases and sides) the same shape and
size.
2.
In optics, a triangular block of transparent
material (plastic, glass, silica) commonly
used to `bend' a ray of light or split a beam
into its spectral colours. Prisms are used
like mirrors to define the optical path in
binoculars, camera viewfinders, and
periscopes. The dispersive property of prisms
is used in the spectroscope.