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mmonly received system of astronomy, first taught by Pythagoras, and afterward revived by Copernicus, whence it is also called the Copernican system. -- Pythagorean letter. See Y.

Extent or space taken in by anything excursive; compass or extent of excursion; reach; scope; discursive; as, the range of one's voice, or authority. Far as creation's ample range extends. Pope. The range and compass of Hammond's knowledge filled the whole circle of the arts. Bp. Fell. A man has not enough range of tho…

A spasm; a fit; a syncope; delirium. [Obs.] Shak.

Extent; stretch; expanse; hence, application; influence; result; scope. And on the left hand, hell, With long reach, interposed. Milton. I am to pray you not to strain my speech To grosser issues, nor to larger reach Than to suspicion. Shak.

mirror galvanometer. -- Reflecting goniometer. See under Goniometer. -- Reflecting telescope. See under Telescope.

A reflecting telescope.

hrough which the refracted beam passes in the decomposition of light. -- Refracting telescope. (Opt.) See under Telescope.

A refracting telescope, in which the image to be viewed is formed by the refraction of light in passing through a convex lens.

a force. -- Resolution of a nebula (Astron.), the exhibition of it to the eye by a telescope of such power as to show it to be composed of small stars.

A system of wires or lines in the focus of a telescope or other instrument; a reticle.

The study of the retina of the eye by means of the ophthalmoscope.

One of certain narrow, crooked valleys seen, by aid of the telescope, on the surface of the moon.

The unit of monetary value in Russia. It is divided into 100 copecks, and in the gold coin of the realm (as in the five and ten ruble pieces) is worth about 77 cents. The silver ruble is a coin worth about 60 cents. [Written also rouble.]

See Solar system, under Solar. Satellite moth (Zoöl.), a handsome European noctuid moth (Scopelosoma satellitia).

ending in desquamation about the sixth or seventh day. -- Scarlet fish (Zoöl.), the telescope fish; -- so called from its red color. See under Telescope. -- Scarlet ibis (Zoöl.) See under Ibis. -- Scarlet maple (Bot.), the red maple. See Maple. -- Scarlet mite (Zoöl.), any one of numerous species of bright red carn…

Of or pertaining to a sundial. Sciotheric telescope (Dialing), an instrument consisting of a horizontal dial, with a telescope attached to it, used for determining the time, whether of day or night.

ignifying an instrument for viewing (with the eye) or observing (in any way); as in microscope, telescope, altoscope, anemoscope.

wall, etc., upon which an image, as a picture, is thrown by a magic lantern, solar microscope, etc.

A tribe of parasitic copepod Crustacea including a large number of species that are parasites of fishes, as the lerneans. They have a mouth adapted to suck blood.

ern, stereopticon, or the like; a plate on which is an object to be examined with a microscope.