|
Microscope - Dictionary Definition and Overview |
|
Microscope : (noun)
1: magnifier of the image of small objects; "the invention of
the microscope led to the discovery of the cell"
Based on WordNet 2.0
|
|
Microscope : \Mi"cro*scope\, n. [Micro- _ -scope.]
An optical instrument, consisting of a lens, or combination
of lenses, for making an enlarged image of an object which is
too minute to be viewed by the naked eye.
Compound microscope, an instrument consisting of a
combination of lenses such that the image formed by the
lens or set of lenses nearest the object (called the
objective) is magnified by another lens called the ocular
or eyepiece.
Oxyhydrogen microscope, and Solar microscope. See under
Oxyhydrogen, and Solar.
Simple, or Single, microscope, a single convex lens used
to magnify objects placed in its focus.
Based on Webster's Revised Unabridged Dictionary
|
|
Achromatic \Ach`ro*mat"ic\, a. [Gr. ? colorless; 'a priv. _ ?,
?, color: cf. F. achromatique.]
1. (Opt.) Free from color; transmitting light without
decomposing it into its primary colors.
2. (Biol.) Uncolored; not absorbing color from a fluid; --
said of tissue.
Achromatic lens (Opt.), a lens composed usually of two
separate lenses, a convex and concave, of substances
having different refractive and dispersive powers, as
crown and flint glass, with the curvatures so adjusted
that the chromatic aberration produced by the one is
corrected by other, and light emerges from the compound
lens undecomposed.
Achromatic prism. See Prism.
Achromatic telescope, or microscope, one in which the
chromatic aberration is corrected, usually by means of a
compound or achromatic object glass, and which gives
images free from extraneous color.
Based on Webster's Revised Unabridged Dictionary
|
|
Microscope : Microscope: An optical instrument that augments the power of the eye to see small objects. The name microscope was coined by Johannes Faber (1574-1629) who in 1628 borrowed from the Greek to
combined micro-, small with skopein, to view. Although the first microscopes were simple microscopes, most (if not all) optical microscopes today are compound microscopes.
Based on Webster's Revised Unabridged Dictionary (1913)
|
|
|
|
|
