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ion should be begun by gratifying and cultivating the normal aptitude for exercise, play, observation, imitation, and construction; -- a name given by Friedrich Froebel, a German educator, who introduced this method of training, in rooms opening on a garden.

is learned or taught by an express effort; instruction derived from precept, experience, observation, or deduction; a precept; a doctrine; as, to take or give a lesson in drawing." A smooth and pleasing lesson." Milton. Emprinteth well this lesson in your mind. Chaucer.

Open view; a visible state or condition; public observation; publicity. The duke yet would have dark deeds darkly answered; he would never bring them to light. Shak.

stars, certain stars whose position is known, and the data in regard to which are used in observations for finding the longitude, as by lunar distances.

The place from which such observation is made.

Of or pertaining to the moon; as, lunar observations.

i-major axis of the orbit. -- Mean error (Math. Phys.), the average error of a number of observations found by taking the mean value of the positive and negative errors without regard to sign. -- Mean-square error, or Error of the mean square (Math. Phys.), the error the square of which is the mean of the squares of…

to come to; -- often with the sense of unexpectedness. We met with many things worthy of observation. Bacon.

An instrument for determining longitude by observation of the stars.

in a suitable manner, or in a manner to illustrate a subject, or to facilitate practical observation; as, the methodical arrangement of arguments; a methodical treatise. "Methodical regularity." Addison.

One of an ancient school of physicians who rejected observation and founded their practice on reasoning and theory. Sir W. Hamilton.

Analysis of the structure of materials from careful observation of photomicrographs.

That part of science which treats of microscopic objects, or depends on microscopic observation.

pe, and used to determine differences of right ascension and declination between stars by observations of the times at which the stars cross the inner or outer periphery of the ring. -- Double image micrometer, a micrometer in which two images of an object are formed in the field, usually by the two halves of a bisect…

or pertaining to the microscope or to microscopy; made with a microscope; as, microscopic observation.

A spectroscope arranged for attachment to a microscope, for observation of the spectrum of light from minute portions of any substance.

paying attention to details; critical; particular; precise; as, a minute observer; minute observation.

Delicacy or exactness of perception; minuteness of observation or of discrimination; precision.

ing toward the north; situated at the north, or in a northern direction from the point of observation or reckoning; proceeding toward the north, or coming from the north. North following. See Following, a., 2. -- North pole, that point in the heavens, or on the earth, ninety degrees from the equator toward the north.…

e, an annotation on a text or author; a comment; a critical, explanatory, or illustrative observation. The best writers have been perplexed with notes, and obscured with illustrations. Felton.