Posts by jpa
OpenStreetMap wiki describes a technique called aimed straight segments. You need a GPS device or app that can record a trace and show it on the map. Start from a location where you can see the ...
Answer
I'll expand a bit on how one would use a sextant to locate the north or south pole. The basic arrangement needs a horizontal reflective plane, for which Amundsen used a pool of mercury. A precisel...
Answer
Non-breathable waterproof garments are basically polyurethane plastic at the surface. This has one very big benefit in that dirt doesn't stick to it much, and what sticks will usually come off with...
Answer
