rising


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rising

The daily appearance on an observer's horizon of a particular celestial body as a result of the Earth's rotation, the body disappearing below the horizon, or setting, at some time in the following 24 hours. A star rises, on average, 2 hours earlier per month. Stars always rise and set in the same position relative to other stars whereas the Sun, Moon, and planets rise and set at different points on successive days. This led to the early idea of fixed stars and wandering stars.

For an observer at the equator all stars in theory can be seen, rising and setting at right angles to the horizon. At the poles, only the stars in the observer's hemisphere can be seen, and these never rise nor set but move in circles parallel to the equator. At intermediate latitudes some stars (circumpolar stars) never set and some, in a corresponding area in the sky around the opposite pole, never rise. The remaining stars rise and set at oblique angles to the horizon, the time spent above the horizon depending on the observer's latitude and the position of the star relative to the celestial pole. Stars on the celestial equator rise due east and set due west and for all observing positions except the poles remain 12 hours above the horizon.

References in periodicals archive ?
In particular, the inflation rate will start rising as the jobless rate falls below 4 percent for a sustained period (over six months).
However, the growing tightness in labor markets in many parts of the country was being accompanied by some signs of rising pressures on labor compensation, including the use of special bonuses and other innovative compensation initiatives that are not included in the usual statistical measures of labor costs.
The dollar was actually rising, the price of gold was falling, and the upward movement in commodity prices was almost entirely related to drought and drought-induced speculation from the summer's notorious heat-wave.
23, 1995: Crosses 4,000 for the first time, rising 30.
Even so, the sector remains under pressure to balance rising demand for services--especially in education, corrections, and health care--against the public desire for tax relief.
Without the weight of that ice, the crust is rebounding and rising, thereby lowering the sea level along that coast.
Consumer expenditures for motor vehicles increased 6 percent in real terms over the four quarters of 1993, after rising 9 percent the previous year.
Our elected officials must join in rising to the occasion to allow supermarkets and other large stores to serve and employ New Yorkers without having to become enmeshed in years of bitter local political battles," he challenged.
Energy prices began rising sharply last November, after the OPEC nations agreed to limit crude oil production.
Poland also showed favourable development, with new sales during the year rising 53% in local currency.
The 1998 calendar year sales of Upper East Side (the neighborhood bounded by 61st and 96th streets to the south and north, and Fifth Avenue and the East River to the west and east) townhouses and properties of up to four units indicates a continued trend of rising prices, increasing demand and decreasing product availability.