How does an automatic direction finder (ADF) work?  How small can you make one?
481454
ADF's detect an electric field and a magnetic field which are perpendicular in space and their amplitudes vary sinusoidally with time. The magnetic field induces a voltage into the windings of the ADF loop antenna. By measuring the phase difference between the windings the ADF is able to determine the direction of the beacon. \n\nPutting beacons around the house and using ADF to navigate turns out to be expensive and inefficient as GPS and proximity sensors are available and work better.
140476
Speed and direction, if thats what you're asking
271377
Now, if only they would enable the user to input their OWN functions...that would be useful.  \n\nBTW, if anyone knows how to do that, I would surely like to know!
874727
You need to sum the components. Let Fr, Fl, Fu, and Fd be to right, left, upward, and downward directed forces, respectively. Then\n\nFx = Fr - Fl\n\nand\n\nFy = Fu - Fd.\n\nThe right and upward directions are taken as the positive direction so that the minus sign indicates that the forces (Fl and Fd) are directed to the left and downward.\n\nThe magnitude of the resulting force is then computed as\n\nF = sqrt(Fx^2 + Fy^2)\n\nand the direction can be found from\n\ncos(q) = Fx/F\n\nUse some reasoning to be sure that the direction you compute is consistent with the orientation of the force components.
1025304
Take a look at following web pages:\n\nhttp://usa.autodesk.com/adsk/servlet/item-w?siteID=123112&id=2774123\n\nhttp://usa.autodesk.com/adsk/servlet/index?id=5659302&siteID=123112
1001818
see a minor distance creat such a difrnc, 10/10
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 :-)
1095005
You would need at least two pedals, one to scroll the alphnumeric characters and one to choose....this would be very time consuming.\nNone of my business but what are you trying to achieve? There may be better options....
267366
Here is a good article on overcoming the limitations of GPS indoors:\n\nhttp://www.gpsworld.com/gpsworld/article/articleDetail.jsp?id=75804
263422
Distance=rate*time\n\nJust plug in what you know and solve for what you're missing.
177438
Imagine you owned a field which was 1 mile \nwide and 2 miles long.  If you'd like to\nknow how far you'd have to walk from one\ncorner diagonally to the opposite corner,\nthen it would be handy to know "square root\nof 5", since that's the number of miles \nthe diagonal is.
589918
the u have to set it's Path.\nlook at in OPTON Menu. U will Find it.
40284
(1) Subtitute the damn values for what you have.\n\n(2) Sin theta=opp/hyps,\n    Tan   "  =opp/adj,\n    Cos   "  =adj/hyps.\n\nNow usually a blind man follows his stick now you might know where you are at the moment - get it???
514114
There are various algorithms for computing shortest paths between points. For finding directions from one point to various other points, one could use Dijkstra's Single Source Shortest path algorithm. For finding directions from any point to any other point, one could use the Floyd-Warshall all-pairs algorithm. Various other algorithms have improvements on these two, but the ideas are the same.\n\nEssentially, Mapquest has computed the distance from point A to point B for every A and B. They store this information in a large database(they also store a large sum of it in memory) so that directions may be quickly retrieved.
535174
There is often a wide divergence between theory and application.  I remember one application where lengthy mechanical linkages and cables were used to transmit rudder position for a huge seagoing ship in the even that the steering gear room became flooded (and electronic indication was lost).  The system had too much lost motion to indicate rudder position even though it looked good in theory.  I suggested connecting a vertical rod to the rudders that pierced the overhead into the ("unflooded") compartment above which could be connected to a reliable electronic transmitter (similar to existing "flooded" transmitters) and that worked much better.  Even electronic control systems can exhibit unexpected hysteresis when built.
779107
my answer is not pricice but may help you>\nyou need 1- mic   2- miliampir-meter  ( or AVO-meter)\nput on mA position . connect microphone tow wire to the AVO-miter \ntalk now you'll see AVO-miter pointer moves or digilat nunber increes
858698
Downlaod Google Earth.  It has longitude and latitude adjusters so you just type it in and it will give you a location (and show it to you)