 | John Claudius Loudon - 1826 - 1252 sider
...canal passing through an irregular country, every where on the same level. 3060. Two or more ¡¡laces are said to be on a true level when they are equally distant from the centre of the earth. Also, one place is higher than another, or out of level with it, when it is farther from the centre... | |
 | William Grier - 1832 - 366 sider
...what is called the apparent level, which however is not the true level. Two stations are on the same true level when they are equally distant from the centre of the earth. The apparent level gives the objects in the same straight line, but the true level gives the line which... | |
 | John Farrar - 1833 - 276 sider
...the case refers itself to art. 137,4. 883034A Levelling. 140. Two or more points are said to be on a level when they are equally distant from the centre of the earth f, or from the surface of a tranquil fluid, supposed to be situated immediately above or below them.... | |
 | John Farrar - 1833 - 274 sider
...triangle, and the case refers itself to art. 137,4. Levelling. 140. Two or more points are said to be on a level when they are equally distant from the centre of the earth f, or from the surface of a tranquil ffuid, supposed to be situated immediately above or below them.... | |
 | Frederick Walter Simms - 1834 - 124 sider
...stations, to determine the height or depth of one place with respect to another. Two or more places are on a true level, when they are equally distant from the centre of the earth. Also, one place is higher than another, or above the level of it, when it is further from the centre... | |
 | Luke Hebert - 1835 - 938 sider
...conducting water, &c. It is necessary to premise that two or more places are, strictly speaking, on a level, when they are equally distant from the centre of the earth ; and a line, of which all its constituent points are equally distant from that centre, is called the... | |
 | William Grier - 1836 - 384 sider
...what is called the apparent level, which however is not the true level. Two stations are on the same true level when they are equally distant from the centre of the earth. The apparent level gives the objects in the same straight line, but the true level gives the line which... | |
 | Jacques Ozanam - 1840 - 850 sider
...part of the diameter of the earth, which is less than the elevation of half a line on a globe •iz feet in diameter. Additional Remark. — As Montucla...on a true level, when they are equally distant from tbe centre of the earth. One place also is higher than another, or out of level with it, when it is... | |
 | Abraham Crocker - 1841 - 486 sider
...the nature and inequalities of the surface levelled over may render necessary. Two or more places are on a true level, when they are equally distant from the centre of the earth. Also one place is higher than another, or out of level with it, when it is farther from the centre... | |
 | William Grier - 1842 - 320 sider
...what is called the apparent level, which however is not the true level. Two stations are on the same true level when they are equally distant from the centre of the earth. The apparent level gives the objects in the same straight line, but the true level gives the line which... | |
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One place also is higher than another, or out of level with it, when it is farther from the centre of the earth ; and a line equally distant from that centre in all its parts, is called the line of true levei. 
