Next Slideshow Best Blue Flowers for Your Garden Best Blue Flowers for Your GardenBest Blue Flowers for Your Garden Blue flowers add a cool touch to the landscape. Get the names of blue flowers and learn how to grow different types of blue flowers in your garden.
Solar panels should always face true south if you are in the northern hemisphere, or true north if you are in the southern hemisphere. True north is not the same as magnetic north. If you are using a compass to orient your panels, you need to correct for the difference, which varies from place to place.
Three-figure bearings. Imagine that you are in the middle of the ocean. You are lost and you cannot see any land. You radio for help and are told to turn 125Â° clockwise. But 125Â° from where? Which direction should you be facing in the first place? One sensible idea is to start by facing north. This is the way that 3-figure bearings work. Always start by facing north, and always move in a clockwise direction. Angles of less than 100Â° are written with a '0' in front, to make them a 3-figure bearing. For example, 060Â°, 021Â°. Finding the bearing of A from B. Here is an example. Imagine that you are at point B. You need to travel to point A. On which bearing should you travel?