hour circle

They spent up to an hour circling teeth on a computer screen, then moving them by cutting and pasting.

You could spend two hours circling your destination if you didn't know where it was.

The airplane had spent an hour circling while the pilots wrestled with a landing-gear problem.

They were on the plane when the volcano later blew, and the camera crew spent about an hour circling the eruption for extra footage.

It is a combination of the reflecting sextant with meridian, azimuth, and hour circles.

Declination's angle is measured north or south of the celestial equator, along the hour circle passing through the point in question.

Once, a gunie spied them, and for half an hour circled about them with majestic sweeps.

Others feel compelled to perform private rituals, such as the man who spent hours circling the same route in his car, fearing he had struck a pedestrian.

In astronomy, the hour circle of a celestial object is the great circle through the object and the celestial poles.

Right ascension's angular distance is measured eastward along the celestial equator from the vernal equinox to the hour circle of the point in question.

The day no longer progressed in its normal, linear fashion but instead every hour circled back to its beginning, every moment was lived over and over again.

The globe retains its wooden horizon circle and brass meridian ring, but its hour circle and index are missing.

Christopher filled the gas tank and spent three hours circling the block until he found no a parking place on the Champs-Elysees in front of the cafe.

If the crew had arrived at Spiteos forty-eight hours late, then it was a forty-eight hour circle by lorry that we were looking at.

"The countless hours circling, not to mention with the price of fuel these days, it could wind up costing you a lot of time and money in wasted gas.

The two 12 hour cycles round the main face of the clock remained until about 1900 when the original 24 hour circle was discovered beneath them and they were removed.

It is widely believed that even the occupants of the Russian space station Mir passed some of their idle hours circling high above Earth playing Tetris.

In New Jersey, people will spend what seems like hours circling mall lots, sacrificing shopping time, rather than take a space more than 10 or 15 feet from the stores.

In astronomy, hour angle is defined as the angular distance on the celestial sphere measured westward along the celestial equator from the meridian to the hour circle passing through a point.

After they practically stole a chunk of the mountain for $84,000, they spent six hours circling it until they found a plateau on the 2,920-foot-high summit where they could build their dream house.

This is usually defined as the point on the celestial sphere where the plane crosses the prime hour circle (the hour circle occupied by the First Point of Aries), also known as the equinox.

Alternatively to right ascension, hour angle (abbreviated HA or LHA, local hour angle), a left-handed system, measures the angular distance of an object westward along the celestial equator from the observer's meridian to the hour circle passing through the object.

The hour angle of a point is the angle between two planes: one containing the Earth's axis and the zenith (the meridian plane), and the other containing the Earth's axis and the given point (the hour circle passing through the point).

I am assiduous in training at least six students in every class in the rudiments of astronomy and the use of the sextant, as well as being certain that they have the requisite mathematics to compute declination and right ascension and figure accurately the hour circle of any star.

Su Song also created a celestial atlas (in five separate maps), which had the hour circles between the xiu (lunar mansions) forming the astronomical meridians, with stars marked in an equidistant cylindrical projection on each side of the equator, and thus, was in accordance to their north polar distances.