why is it mroe important to take into account declination when you are closer to the poles?
93529
See, when you read a compass it does not point to true "north" it points (north) to the MAGNETIC pole which currently is in Hudson Bay. SOO if you're reading a map it will give you true north and if its a good map, magnetic north. Most people use maps that use true north. THEREFORE when you're "on the ground" and trying to find your way around and you have a map that points to Magnetic north and your map uses true north you have to take that into account. So we use declination on our compasses so that they guide us more towards true north, rather than into hudson bay. So what you will notice is that a map showing declination over the US is that people BELOW Hudson Bay use little declination because true north is basically where magnetic north is, but way out in Washington and Oregon you have to use more declination because your compass needle will be pointing more easterly that it should.....make sense?
154590
I bought a field guide that helps you find things with your telescope and basic telescope knowledge. i know you have to know where north/south (which ever is closer to you) and what your latitude is in degrees (how far you are from the equator).
48460
Rocket Man is not correct.  The angle that measures an east-west position is called Right Ascension (R.A.).  Declination is an angle for a north-south position.  \n\nHowever since you use the term horizon you may mean azimuth which works in a similar way.  Due north is 0 degrees azimuth and increases in a clockwise direction (90 degrees is east and so on.).  Again you could mean altitude which is 0 degress at the horizon and goes up to the zenith (90 degrees) in any direction.
520636
Assuming a straight line of travel, I'll pick the sphere because there will be less surface area in contact with the incline plane. There would be less friction slowing down the movement of the sphere.
695484
The distance to the center of the earth and most planets is greater at the equator than at the poles. This is due to the spinning of the object on its axis.
45817
An extra down, a longer field, and latitude
1052535
at either of the poles. The least distance to travel
38995
In this situation a compass needle will not point to anywhere on the dial very strongly - it will just wander around weakly with no real direction. Explorers now need GPS to determine the exact pole location; it shifts slightly every year.\n\nDC :-)
1027858
you are farther from the equator.
1057502
There are actually an infinite number of answers to this old puzzle.  The traditional answer is of course, "You are at the North Pole."\n\nThis assumes that the walking "1 mile due east" portion is defined as "keeping the north pole directly left of you as you walk", or inversely, "keeping the south pole directly right of you as you walk".  Thus when you walk to the east, you simply make a 1-mile arc about the north pole.\n\nAnother set of infinite answers is "any point 1 + 1 / (2 * pi) miles away from the soth pole".  Following the directions, you will walk one mile toward the south pole, then walk one mile east which will take you *in a complete circle around the south pole*, then one mile back north to your starting position.\n\nFollowing this logic, you can find an infinite number of circles as a solution.  For example, "any point 1 + 1 / (4 * pi) miles away from the south pole" will have the easterly portion of the walk take you completely around the south pole *twice*.  And "any point 1 + 1 / (6 * pi)" will walk you around the south pole three times, etc.
977241
The axis, and therefore, poles, gravitational pull is slowly changing. (Therefore changing due Norths position.)  That's alot of observant Sailors.
60283
This question has been adequately answered, but it is a trick question in that every direction at the north pole is south (you can't walk east, west, or north of the north pole), and every direction at the south pole is north. You could, however take one step south, turn and walk east, but you would have to walk in a little circle to maintain your easterly direction. Weird, huh?
1104626
One cannot provide solution without the longitude of local station...\nIt shall be atleast 2500 miles away...
988952
because gravity points to the center of the sphere, so no matter where you are on teh sphere, the down direction is towards the center of teh planet, wich allows penguins in teh south pole to walk on teh surface of the planet.\nIf you look at constelation however, they do appear upside down when viewed from below the equator, proving that we are walking on a sphere
592191
From Wikipedia :\n"The North Star has been historically used by explorers to determine their latitude. At any point north of the equator the angle from the horizon to the North Star (its altitude) is the same as the latitude from which that angle was taken. For example, the angle to the North Star for a person at 30° latitude will be about 30°."
44804
at its centre there is no\nacceleration due to gravity. \nTo determine the other two you need to know the distance from the centre to the equator and the distance to the poles(since the Earth isnt a perfect sphere,it bulges slightly at the equator) and use the formula\n\ng= GM/R^2
1081450
yes, assuming the poles were damn near touching. as for the distance, magnetic force vs distance is an exponential curve so technically the force never diminishes. you have to set a lower threshold to say that the force has diminished once below that threshold, e.g <1lb.