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Seventh-Day Baptists

(Encyclopedia)Seventh-Day Baptists, Protestant church holding the same doctrines as other Calvinistic Baptists but observing the seventh day of the week as the Sabbath. In the Reformation in England the observance ...

solar time

(Encyclopedia)solar time, time defined by the position of the sun. The solar day is the time it takes for the sun to return to the same meridian in the sky. Local solar time is measured by a sundial. When the cente...

sidereal time

(Encyclopedia)sidereal time (ST), time measured relative to the fixed stars; thus, the sidereal day is the period during which the earth completes one rotation on its axis so that some chosen star appears twice on ...

cycle

(Encyclopedia)cycle, in astronomy, period of time required for the recurrence of some celestial event. The length of a cycle may be measured relative to the sun or to the fixed stars (see sidereal time). A frequent...

wave, in the earth sciences

(Encyclopedia)CE5 A. Diagram of wave: Wave travels one wavelength during one period B. Diagram of wave: Phase relationships wave, in oceanography, an oscillating movement up and down, of a body of water caused ...

meteor

(Encyclopedia)meteor, appearance of a small particle flying through space that interacts with the earth's upper atmosphere. While still outside the atmosphere, the particle is known as a meteoroid. Countless meteor...

international date line

(Encyclopedia)international date line, imaginary line on the earth's surface, generally following the 180° meridian of longitude, where, by international agreement, travelers change dates. Traveling eastward acros...

universal time

(Encyclopedia)universal time (UT), the international time standard common to every place in the world, it nominally reflects the mean solar time along the earth's prime meridian (renumbered to equate to civil time)...

Day, John, English printer

(Encyclopedia)Day, John, 1522–84, English printer. At his London shop Day designed and made type for himself, but not for sale. His types included musical notes and the first Anglo-Saxon type. He printed the firs...

Day, John, English dramatist

(Encyclopedia)Day, John, 1574?–1640?, English dramatist. Educated at Cambridge, he was one of Philip Henslowe's group of playwrights, collaborating with Thomas Dekker, Henry Chettle, and others. The allegorical m...