 | Edward Isidore Sears - 1873 - 444 oldal
...known as Kepler's problem. Kepler also proved that the radins-vecter of a planet, or the imaginary line drawn from the centre of the sun to the centre of the planet, passes over equal areas in equal times, and this law enabled him to find the position of the... | |
 | Robert Sullivan - 1874 - 502 oldal
...In this case, it is obvious that the plane of the circle of illumination would be perpendicular to a line drawn from the centre of the sun to the centre of the earth," to which we suppose the sun's rays to be parallel ; for in this position the axis represents that line;... | |
 | 1877 - 996 oldal
...undaunted patience. For he saw that, though the speed of the planet varied, the radius vector — ie, a line drawn from the centre of the sun to the centre of the planet — always covered equal areas in equal times. Once more, as he watched the swift flight of... | |
 | 1878 - 924 oldal
...undaunted patience, i For he saw that, though the speed of the 1 planet varied, the radius vector — ie, a line drawn from the centre of the sun to the centre of the planet — always covered equal areas in equal times. Once more, as he watched the swift flight of... | |
 | 1880 - 920 oldal
...into strips an inch wide, and allowing half an inch at each end for the lap, would it require to reach from the centre of the sun to the centre of the earth ; and how much would it all cost at a shilling a yard ? " This was worked out without the assistance... | |
 | Simon Newcomb, Edward Singleton Holden - 1881 - 584 oldal
...other. We now have the following definitions : The radium vector of the earth is the straight line from the centre of the sun to the centre of the earth. As the earth describes its annual revolution around the sun, its radius vector describes a plane. This... | |
 | Alexander Macleod Symington - 1883 - 372 oldal
...into strips an inch wide, and allowing half an inch at each end for the lap, would it require to reach from the centre of the sun to the centre of the earth, and how much would it all cost at a shilling a yard?' This was worked out without the assistance of... | |
 | Robert Sullivan - 1884 - 510 oldal
...In this case, it is obvious that the plane of the circle of illumination would be perpendicular to a line drawn from the centre of the sun to the centre of the earth,' to which we suppose the sun's rays to be parallel ; for in this position the axis represents that line;... | |
 | John Thornton - 1888 - 266 oldal
...not constant, but varies. This variation of the velocity is such that if a straight line be always drawn from the centre of the sun to the centre of the earth, and be carried round by the earth in its revolution, it will sweep over equal areas in equal intervals... | |
 | W. S. Cassedy - 1888 - 236 oldal
...hypothenuse extends from 40° N. to the sun's centre. 2. The vertical line on the 21st of September extends from the centre of the sun to the centre of the earth, through the equator. These two lines cannot be parallel because, "No two '•bodies can approach the... | |
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In this case, it is obvious that the plane of the circle of illumination would be perpendicular to a line drawn from the centre of the sun to the centre of the earth... 
