SOLAR a.
sun, or peculiarly affected by its influence. They denominate some herbs solar, and some lunar. Bacon. Solar cycle. See under Cycle. -- Solar day. See Day, 2. -- Solar engine, an engine in which the energy of solar heat is used to produce motion, as in evaporating water for a steam engine, or expanding air for an ai…
TIDE n.
an, and of bays, rivers, etc., connected therewith. The tide ebbs and flows twice in each lunar day, or the space of a little more than twenty- four hours. It is occasioned by the attraction of the sun and moon (the influence of the latter being three times that of the former), acting unequally on the waters in differe…
TROPICAL a.
al or allusive part of the parable and the thing intended by it. South. Tropic month. See Lunar month, under Month. -- Tropic year, the solar year; the period occupied by the sun in passing from one tropic or one equinox to the same again, having a mean length of 365 days, 5 hours, 48 minutes, 46.0 seconds, which is 2…
YEAR n. 2 definitions
dopted by various nations as a measure of time, and called the civil year; as, the common lunar year of 354 days, still in use among the Mohammedans; the year of 360 days, etc. In common usage, the year consists of 365 days, and every fourth year (called bissextile, or leap year) of 366 days, a day being added to Febru…