How the boat gets is heading using the light frm the light house.. Pls explain me clearly..
Ok, I meant use it to find his orientation and not drive the boat exactly towards the light house.Maybe not too close, mik3 - the lighthouse marks something that is dangerous to run into.
I know what your talking about here, and i'll try to give a rough explanation on how it works. I am not saying this is how all lighthouses work, or anything like that. I am just trying to explain how this system the OP is talking about works. It is similar to the concept of VOR (VHF omnidirectional radio range) Navigation systems on aircraft).My sir taught me that light house emits a omni directional pulse of light every time the beam is pointing towards due north.. .....
thank u very much dude teno45... In order to understand the VOR he said the lighthouse as analogy so posted here thanks a lot dudeI know what your talking about here, and i'll try to give a rough explanation on how it works. I am not saying this is how all lighthouses work, or anything like that. I am just trying to explain how this system the OP is talking about works. It is similar to the concept of VOR (VHF omnidirectional radio range) Navigation systems on aircraft).
The easiest way to think of it is with two lights. One unidirectional light (that shines in all directions) and one directional light that rotates at a set speed. When the rotating light points to true north, the unidirectional light will flash. then the rotating light with do one full rotation. then the unidirectional light will flash again. and this continues indefinitely.
Now, lets assume that the rotating light takes 60 seconds to do a complete loop. If you see the flash, then it takes 30seconds for you to see the rotating light pointing right at you:
60seconds (total rotation) / 30seconds (time since flash) = 2.
360 (degrees on a compass) / 2 (from previous equation) = 180(degrees).
This says you are 180 from north(ie: SOUTH), FROM the lighthouse. ie: you are directly south of the lighthouse. and the light house is directly north of you.
If you see only one flash, then you are directly north of the lighthouse.
Hope this helps.