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One engaged in the scientific measurement of light.

That branch of science which treats of the measurement of the intensity of light.

eying and map making. From the differences between two pictures taken at the same moment, measurements in all dimensions of the region may be obtained.

A Turkish cloth measure, varying from 18 to 28 inches.

A measure of capacity, equal to half a quart, or four gills, -- used in liquid and dry measures. See Quart.

ment or bulb in the middle, and usually graduated, -- used for transferring or delivering measured quantities.

The distance from center to center of any two adjacent teeth of gearing, measured on the pitch line; -- called also circular pitch.

Any portion of space regarded as measured off or distinct from all other space, or appropriated to some definite object or use; position; ground; site; spot; rarely, unbounded space. Here is the place appointed. Shak. What place can be for us Within heaven's bound Milton. The word place has sometimes a more confused se…

A long measure of 100 Greek, or 101 English, feet; also, a square measure of 10,000 Greek feet.

That department of meteorology that treats of the measurement of the precipitation of rain, snow, etc.

Measurement of the capacity of the lungs for air. Dunglison.

A metrical composition; a composition in verse written in certain measures, whether in blank verse or in rhyme, and characterized by imagination and poetic diction; -- contradistinguished from prose; as, the poems of Homer or of Milton.

A standard unit of measure for the size of type bodies, being one twelfth of the thickness of pica type. See Point system of type, under Type.

large bear (Ursus, or Thalarctos, maritimus) inhabiting the arctic regions. It sometimes measures nearly nine feet in length and weighs 1,600 pounds. It is partially amphibious, very powerful, and the most carnivorous of all the bears. The fur is white, tinged with yellow. Called also White bear. See Bear. -- Polar b…

A measuring stick; also, a measure of length equal to 5 Bacon. Pole bean (Bot.), any kind of bean which is customarily trained on poles, as the scarlet runner or the Lima bean. -- Pole flounder (Zoöl.), a large deep-water flounder (Glyptocephalus cynoglossus), native of the northern coasts of Europe and America, and m…

ent of a political party; the conduct and contests of parties with reference to political measures or the administration of public affairs; the advancement of candidates to office; in a bad sense, artful or dishonest management to secure the success of political candidates or parties; political trickery. When we say th…

A lively Bohemian or Polish dance tune in 2-4 measure, with the third quaver accented. Polka jacket, a kind of knit jacket worn by women.

A stately Polish dance tune, in 3-4 measure, beginning always on the beat with a quaver followed by a crotchet, and closing on the beat after a strong accent on the second beat; also, a dance adapted to such music; a polacca.

The energy of an electrical charge measured by its power to do work; hence, the degree of electrification as referred to some standard, as that of the earth; electro-motive force.

A liquid measure of four pints.