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HOUR ANGLE

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Originally appearing in Volume V13, Page 809 of the 1911 Encyclopedia Britannica.

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HOUR

HOUR See also:
ANGLE (from the Lat. angulus, a corner, a diminutive, of which the primitive form, angus, does not occur in Latin; cognate are the Lat. angere, to compress into a bend or to strangle, and the Gr. ayKOS, a bend; both connected with the Aryan root ank-, to
ANGLE ,' the angu:ar distance of a heavenly See also:

BODY

body from the See also:

meridian, as measured around the See also:

CELESTIAL, OR STELLAR

celestial See also:

pole. It is equal to the angle at the pole between the hour circle through the body and the meridian, but is usually expressed in See also:

time. HOUR-See also:

GLASS, a See also:

DEVICE

device for measuring intervals of time, also known as See also:

sand-glass, and as See also:

LOG (a word of uncertain etymological origin,possibly onomatopoeic; the New English Dictionary rejects the derivation from Norwegian lag, a fallen tree)

log-glass when used in See also:

CONJUNCTION (from Lat. conjungere, to join together)

conjunction with the See also:

COMMON

common log for ascertaining the See also:

SPEED, JOHN (1552–1629)

speed of a See also:

SHIP

ship. It consists of two See also:

PEAR (Pyrus communis)

pear-shaped bulbs of glass, See also:

UNITED

united at their apices and having a See also:

minute passage formed between them. A quantity of sand (or occasionally of See also:

mercury) is enclosed in the bulbs, and the See also:

SIZE

size of the passage is so proportioned that this sand will completely run through from one bulb to another in the time it is desired to measure—e.g. an hour or a minute. See also:

INSTRUMENTS

Instruments of this See also:

KIND (O. E. ge-cynde, from the same root as is seen in " kin," supra)

kind, which have no See also:

GREAT

great pretensions to accuracy, were formerly common in churches. In the See also:

ENGLISH

English See also:

House of See also:

COMMONS

Commons, as a preliminary to a See also:

DIVISION (from Lat. dividere, to break up into parts, separate)

division, a two-minute sand-glass is still turned, and while the sand is See also:

RUNNING

running the " division bells " are set in See also:

motion in every See also:

PART

part of the See also:

BUILDING

building, to give members See also:

NOTICE

notice that a division is at See also:

hand.

End of Article: HOUR ANGLE

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