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.
By 'face', the mean the sides of the dunes. All sand dunes have what is called a windward side (facing the wind or facing upwind) and an opposite leeward side (facing downwind). The sand blown on the windward side blows along the top until it gets deposited on the crest of the dune.