Keeping these two simple items in your pack—and knowing ... One of the tricky parts of navigating with a compass is that magnetic north isn’t the same as true north. The angle between the ...

Wait a minute, and you will find the magnet's North Pole is pointing north! You've constructed a simple compass. The entire earth is surrounded by its own magnetic field. If a bar magnet is ...

While it does rely on having a functioning phone, a modern smartphone’s built-in compass doesn’t require a signal to work. We would still recommend having a good simple compass in your pack as ...