...the view of obtaining a convenient and uniform measure of time, have recourse to a mean War <Ini/, the length of which is equal to the mean or average of all the apparent solar days in a year. An imaginary Sim, called the mean Sun, is conceived to move uniformly in the Equator with the real...

...called a mean solar day, which is the computed average length of the actual solar days; ie its length is equal to the mean or average of all the apparent solar days in a year; as its commencement never differs much from that of the real solar day, and as its length is invariable,...

...Astronomers, with the view of obtaining a convenient and uniform measure of time, have recourse to a mean solar day, the length of which is equal to...average of all the apparent solar days in a year. An imaginary Sun, called the mean Sun, is conceived to move uniformly in the Equator with the real...

...Astronomers, with the view of obtaining a convenient and uniform measure of time, have recourse to a mean solar day, the length of which is equal to...average of all the apparent solar days in a year. An imaginary Sun, called the mean Sun, is conceived to move uniformly in the Equator with the real...

...ineonvenicnee arising from this want of uniformity in the length of the natural days, recourse is had to a mean solar day, the length of which is equal to the mean of all the apparent solar days in a year, and is such as would be shewn by the sun, if the earth revolved...

...Astronomers, with the view of obtaining a convenient and uniform measure of time, have recourse to a mean solar day, the length of which is equal to...average of all the apparent solar days in a year. An imaginary Sun, called the mean Sun, is conceived to move uniformly in the Equator with the real...

...Astronomers, with the view of obtaining a convenient and uniform measure of time, have recourse to a mean solar day, the length of which is equal to...average of all the apparent solar days in a year. An imaginary Sun, called the mean Sun, is conceived to move uniformly in the Equator with the real...

...Astronomers, with the view of obtaining a convenient and uniform measure of time, have recourse to a mean solar day, the length of which is equal to the mean or average of all the apparent sqlar days in a year. An imaginary Sun, called the mean Sun, is conceived to move uniformly in the...

...quantity. Astronomers, with a view of obtaining a convenient and uniform measure of time, have recourse to a mean solar day, the length of which is equal to...average of all the apparent solar days in a year. An imaginary Sun, called the mean Sun, is conceived to move uniformly in the Equator with the real...

...considerably at different times of the year, and in order to obviate this inconvenience, recourse is had to a mean solar day, the length of which is equal to the mean of all the apparent solar days in a year, and is such as would be shown by the sun if the earth revolved...